ACR Owners Manual

8/7/2019 ACR Owners Manual

1/59

Bushmaster

aCr

Operating and safety manual


2/59

TABLE OF CONTENTS

PAGE

1 Warnings/Cautions/SafeHandling

2 DangerousProcedures

3 AboutYourBushmasterFirearm

4-5 FirearmFeatures&ControlsIdentication/Location

6 ClearingYourFirearm

7 PreventativeMaintenanceChecks

8 SafetyFunctionCheck

9 PreparingtoFire/LoadingaMagazine

10 OperationofYourFirearm/Loading

10 Operation/InsertingaMagazine

11 Operation/ChamberingfromOpenBolt

12-13 Operation/ChamberingfromClosedBolt

14 Operation/StockAdjustments

15 ImmediateActions-InCaseofTrouble

16 RemedialActions

17 BulletStuckintheBore

18 BackUpSights

PAGE

19 ZeroingYourSights

19 25MeterZeroingProcedures

20 Front&RearSightAdjustment

21-25 DisassemblingYourFirearm

26 Inspection/Cleaning/Lubrication

27-28 DetailedCleaningTechniques

29 CleaningtheUpperReceiver

29 CleaningtheBolt&Carrier

30 Cleaning/LubricatingtheEjector

31 CleaningtheLowerReceiver

31-35 ReassemblingYourFirearm

36-37 MagazineDisassembly/Reassembly

38-42 Re-ConguringFirearm

43-47 Problems/Solutions

48 MaintenanceinExtremeWeather

49 PartsandAccessories

50-51 ComponentVariations

52-54 Warranty

P.O. Box 1479 999 Roosevelt Trail Windham, Maine 04062 U.S.A.Sales: 1 800 998 7928 Customer Service: 1 800 883 6229 Tel. 207 892 3594 Fax: 1 207 892 8068http://www.bushmaster.com E-mail: [email protected]


3/59

PLEASE PRACTICE SAFE FIREARMS HANDLING!

WARNING:IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED,

UNINTENTIONAL DISCHARGE COULD RESULT AND COULD CAUSE INJURY, DEATH,

OR DAMAGE TO PROPERTY.

CAUTION:CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING ANDFIRING THIS FIREARM. FOLLOW ALL INSTRUCTIONS ON THE PROPER HANDLING

AND SAFE USE OF THIS FIREARM - LIVES MAY DEPEND ON IT!

CAUTION:USE ONLY CLEAN, DRY, HIGH QUALITY COMMERCIALLY MANUFACTURED

AMMUNITION IN GOOD CONDITIONwhich is appropriate to the 5.56mm NATO/223

Remington or 6.8mm Remington SPC caliber o your Firearm. Bushmaster does notrecommend the use o remanuactured or hand loaded ammunition because it

may damage your rie and/or cause your frearm to malunction.

WARNING:THIS FIREARM COULD CHAMBER A ROUNDi it is dropped or jarred with aloaded magazine in place - either with the Bolt Carrier Assembly locked to the rear, or in its

orward position.

1

FUNDAMENTAL RULES FOR SAFE GUN HANDLING

ALWAYS KEEP THE FIREARM POINTED IN A SAFE DIRECTION.

NEVER LOAD THE FIREARM UNTIL READY TO USE.

KEEP YOUR FINGER OFF THE TRIGGER UNTIL READY TO SHOOT.


4/59

WARNING: BEWARE OF DANGEROUS PROCEDURES

BesureCamPinisinstalledintheBoltGroup.Ifitisnt,yourFirearmcanstillreand COULD

MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WhenusingaBlank Firing Attachment, NEVER FIRE ANYTHING EXCEPT BLANKS!Foryour

safety,werecommendthevisible,militarystyleblankringattachment(BFIPart#RAY-008).

Ifyourrearmstopsringwithaliveroundinthechamberofahotbarrel(amisre),REMOVE

THE ROUND FAST!However,ifyoucannotremoveitwithin10seconds,removemagazineand

wait15minuteswith the Firearm pointing in a SAFE DIRECTION!Thiswayyouwontbehurt

byapossibleroundcooking-o(i.e.therounddetonatingjustfromtheheatofthebarrel).

Keepyourfaceawayfromtheejectionportwhileclearingahotchamber.

Ifyourboltfailstounlock,andyoutrytofreeitbytappingthebuttstockonthegroundwhilepullingonthecharginghandle,keep yourself clear of the Muzzle and the Firearm pointed down range.

Ifthereiswaterinthebarrel,donotretherie.IT COULD MALFUNCTION CAUSINGPROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

Pullthecharginghandletothereartobreakthesealtoensurethewaterwillrunofrom

thechamberthroughtheejectionportarea.

Ifanoticeabledierenceinsoundorrecoilisexperienced,STOP FIRING!Eitherconditioncouldindicateanincompletepowderburnand/orabulletorotherobstructionstuckinthebore.

TaketheFirearmtoaqualifiedgunsmithandhaveobstructionsremoved.

NOTE:WiththeBoltCarrierAssemblylockedtotherear,orinitsforwardposition,iftheFirearmis

droppedorjarredwithaloadedmagazineinplace,aliveroundcouldbechambered.

2 ALWAYS PRACTICE SAFE FIREARMS HANDLING!


5/59

ABOUT YOUR BUSHMASTER RIFLE

ThisOperatingManualcoverstheBushmaster ACR(ACR)whichischamberedin5.56mmNATO/223

Remingtonand6.8mmRemingtonSPCammunition.Itisagaspiston,air-cooledshoulderfired,magazine-

fedFirearm,thatisSemi-Automaticinoperation(i.e.,asingleroundwillfireeachtimethetriggerispulled).

TheACRBarrelsarecoldhammerforgedandholdthetightesttoleranceallowed.Theyarerifledwitheithera

1turnin7forheaviergrainweightbulletsor1turnin9forlighterbulletswitharighthandtwist6landsand

grooves.

TheACRisoperatedbyaregulated,short-strokeGasPistonSystemwhicheliminateshotgasfrombeingin-

troducedintotheUpperandLowerReceivers.TheRegulatorcanbesetforUnsuppressedorSuppressedfire.

TheACRisamulti-caliberplatformandiscapableoftransitioningtoarangeofcaliberssimplybyswappingtheBarrelAssemblyandBolt,usingtheappropriateMagazine.Somecalibersmayrequireanalternatelower

toacceptdifferentsizedMagazines.

AllACRUpperandLowerReceiversareeasilyopenedforcleaningandinspection.

TheUpperReceiverismadeofextrudedAluminumandtheLowerReceiverismadeofaproprietary

compositepolymer.

MostACRmodelsfeaturefullyadjustablerearsights/elevationadjustablefrontsights.

TheBoltGrouplocksintotheBarrelExtensionwith7lockinglugs.

AllmodelscanbeconfiguredwitheitheraFixedStockor7positionTelescoping/FoldingStock.

Allmodelsfeatureverticalpistolgripsanddetachablemagazines.Magazinecapacityis30roundsstandard

(dependingonStateRegulations),butallAR-15/M-16typemagazinesofcapacitiesfrom5to40roundswillfit

theACRandfunctioninit.3


6/59

Firearm Features & Controls - Identication/Location

4

AdjustableCheekPiece

FixedHigh-ImpactCompositeA-FrameStockwithRubberButtpad

MBUSRearFlipSight MBUSFrontFlipSight

GasRegulatorSelector

MonolithicMIL-STD-1913TopRail

BrassDeector

PistolGrip

BoltCatch/Release

30RoundPMAG

Compensator

MagazineReleaseButton

CompositePolymerHandGuard

Trigger

SafetySelector


7/59

Firearm Features & Controls - Identication/Location(contd.)

5

M4ProleBarrel

ChargingHandleTakedownPin

StockReleasePinQuickDetachSlingCoupler QuickDetach

SlingCoupler

HandGuardRetainingPin

MagazineReleaseButton

BoltCatch/Release

SlingLoops

SafetySelectorPivotPin

NOTE:ATF Regulations require a minimum barrel length of 16" oncommercially

availableriesandcarbines.This16"lengthcanbeacombinationofbarrelandpermanentlyxed(pinned&weldedover)muzzlebrake/ashsuppressoraslong

astotallengthequals16".


8/59

CLEARING YOUR FIREARM

ALWAYS FOLLOW THE RULES OF SAFE FIREARM HANDLING. First,assumetherearmyouarehandlingisloaded,andthenproceed-accordingtothefollowing

steps-toCLEAR YOUR FIREARM. . .

1.PointFirearminaSAFE DIRECTION!PlaceSafetySelectorLeveronSAFE.

NOTE: If the Firearm is not cocked, the SafetySelector Lever cannot be pointed toward SAFE.

2.PressMagazineReleaseButtonandpullMagazine

downtoremove.

3.TolockBoltopen,pullChargingHandlerearward.PressupwardontheBoltCatchandallowBolttomoveforwarduntilitengagestheBoltCatch.Ifyouhaventbefore,nowplaceSafetySelectorLeveronSAFE.

SafetySelectorLeveronSAFE.

4.VisuallyandphysicallycheckthattheChamberisclear.

6


9/59

PREVENTATIVE MAINTENANCE CHECKS & SERVICES

CHECK BEFORE YOU FIRE!

2.RetracttheBolttoensurefreemovementoftheBoltCarrier.

3.PerformSafetyFunctionCheck(nextpage)toensurethatSafety

SelectorLeverworksproperly.

4.EnsuretheGasRegulatorissettoUforunsupressedre;ifring

withasilencermounted,setGasRegulutortoSforsuppressedre.

7

NOTE:GasRegulatormustbesetcorrectlyforeitherunsuppressed

orsuppressedre;IfnotsetcorrectlytheFirearmcouldmalfunctioncausingpersonalinjury,propertydamageordeath.

WARNING!NeveroperateFirearmwithGasRegulatorsetinbetween

theUandSsettings.

ALWAYS FOLLOW THE RULES OF SAFE FIREARM HANDLING.First,assumetheFirearmyouarehandlingisloaded,andthen

proceed-accordingtothefollowingsteps-toCLEAR YOUR FIREARM...

1.ChecktoseethatthereisNO EXCESSIVE OILinthe

Bore.Ifthereis,swabitoutwithapatchandthecleaning

rod.ALWAYS CLEAN A NEW FIREARM BEFORE FIRING.

WARNING!IftheFirearmisredwithoil-orwater-inthebarrel,excessivepressurewillbe

createdandtheFirearmcouldmalfunctioncausingpersonalinjury,propertydamageordeath.


10/59

SAFETY FUNCTION CHECK

UNLOAD FIREARM - REMOVE MAGAZINE - CHECK CHAMBER1.RemoveMagazineifinstalled.PullChargingHandleassemblytorear.CheckthatChamberis

clear.LettheBoltandBoltCarrierclose.DonotpullTrigger.LeaveHammerincockedposition.

WARNING! IfFirearmfailsanyofthefollowingtests,continueduseoftheFirearmcouldcausea

malfunctioncausingpersonalinjury,propertydamageordeath.

2.PlaceSelectorLeverinSAFEposition,pointrieinasafedirection,

andpulltheTrigger.THE HAMMER SHOULD NOT FALL.

3.PlaceSelectorLeverinFIREposition.PulltheTrigger.

THE HAMMER SHOULD FALL.

NOTE:Forpurposesofthefollowingcheck,SLOWisdened

asonefourthtoonehalfthenormalrateoftriggerrelease.

4.HoldTriggertotherear,pullChargingHandletotherearandreleaseChargingHandle.Then

releasepressureontheTriggerwithaslow,smoothmotion,withouthesitationsorstops,until

theTriggerisfullyforward.

AN AUDIBLE CLICK SHOULD BE HEARD - THE HAMMER SHOULD NOT FALL.

5.RepeattheFIREpositiontestFIVE TIMES.TheFirearmmust

notmalfunctionduringanyofthesevetests.Pullthe

ChargingHandletotherearonelasttimeandreleaseforward.

6.PlacetheSelectorLeverinSAFEposition.PulltheTrigger.

THE HAMMER SHOULD NOT FALL.

IftheFirearmmalfunctionsduringanyofthesefivetests,havetheFirearmcheckedbyaqualifiedgunsmith.8


11/59

PREPARING TO FIRE - LOADING A MAGAZINE

1.Useonlyquality5.56mm/223RemingtonAmmunitioninyourFirearm

(or6.8mmRemingtonSPCifapplicable).ExamineeachCartridge-particularlyaroundtheprimer.Lookfordents,scratches,andothersignsofdamage.

DO NOT LOAD DAMAGED AMMUNITION!

2.WiththeMagazinefacingforward,asshownintheillustration,placeaRoundbetweentheFeedLipsoftheMagazinewiththeBulletTipforward.PushtheRounddownuntil

itisheldbytheMagazineFeedLips.

3.Ifnecessary,givetheRoundaslightpushbackwardtoseatitagainsttheinsideback

edgeoftheMagazineFeedLips.PlacenextRoundontopofthepreviousRoundand

repeatstepsuntildesirednumberofRoundsareloadedintoMagazine.

CAUTION! SafeFirearmsHandlingdictatesthatyouONLY LOAD LIVE AMMUNITION

INTO YOUR RIFLE WHEN YOU ARE ABOUT TO SHOOT.

9


12/59

OPERATION OF YOUR FIREARM LOADING

CAUTION: ALWAYS POINT THE MUZZLE IN A SAFE DIRECTION!

1.WiththeHammercocked,place

SelectorLeveronSAFE.2.OpenBoltandcheckFiringChamber.

MakesureitisCLEAR!

1.ReturnChargingHandletoforward,

lockedposition.PushMagazineupinto

MagazineWelluntilMagazine

Catchengages

andholdsthe

Magazine.

2.SlapupwardsonMagazinebottomtomakesureitisseatedcorrectly.

10

INSERTING A MAGAZINE


13/59

OPERATION OF YOUR FIREARM(contd.)

CHAMBERING A ROUND FROM AN OPEN BOLT

NOTE:TheMagazinemaybeinsertedintotheFirearmwiththeBoltAssemblyOpenorClosed.

11

2.TAPtheChargingHandleforwardwiththe

heelofyourhandtoensurethattheBoltis

fullyforwardandlocked.

1.PresstheBoltCatchdownward.Boltshouldspringforward.Thiswillchamberaround

fromtheMagazine.

FIREARM IS NOW READY TO BE AIMED AND FIRED!


14/59


CHAMBERING A ROUND FROM A CLOSED BOLT

1.WithaMagazineintheFirearm,pulltheChargingHandlefullytoRear.Thenreleasethe

ChargingHandleallowingtheBolttospringforwardchamberingtherstround.

NEVERRideorpushtheChargingHandleforward.Letitmoveforwardonitsown.

12

2.TAPtheChargingHandleforward

toensurethattheBoltisfullyforwardandlocked.

NOTE:IfFirearmisnotgoingtoberedimmediately,makesuretheSelectorLeverisstillonSAFE.

FIREARM IS NOW READY TO BE AIMED AND FIRED!


15/59


AimatTargetPullTriggerRelease.

TheFirearmwillautomaticallyejectthespentCartridgeandchamberanotherRoundinpreparationforthenextshot.ThecycleofpullingtheTriggertoshoot,andtheFirearmautomaticallyreloading,canbecontinueduntil

theMagazineisempty.

NOTE:AfterthelastRoundisred,theBoltCarrierwilllockintherearposition.YoucanthenpushtheMagazineReleaseButtontodropouttheemptymagazine,insertafreshMagazine,releasetheBoltCatch,andanewRoundwillbeautomaticallychamberedin

preparationforthenextringsequence.

WARNING IF A NOTICEABLE DIFFERENCE IN SOUND OR RECOIL IS EXPERIENCED,

STOP FIRING AND IMMEDIATELY CHECK THE FIREARM FOR OBSTRUCTIONS. AN OBSTRUC-TION MAY CAUSE A MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

Eitherconditioncouldindicateanincompletepowderburnand/orabulletstuckinthebore.RetracttheBoltslowlyandremovetheredcartridgecase.CleartheFirearmandcheckforunburnedpowdergrainsintheReceiverorBore,andforaBulletstuckintheBore(SeePage17).Cleanoutanyunburnedpowderbeforeresumingring.IfaBulletisstuckintheBore,donotattempttoremoveit.TaketheFirearmtoaqualiedGunsmith.

CONDITION:FirearmisnowLoaded,aRoundischambered,andSafetySelectorshouldbeonSAFE.

ToFIREtheFirearminSEMI-AUTOMATIC MODE(oneRoundredwitheachpulloftheTrigger),movetheSafetySelectorLeverfromSAFEtoFIRE.

13

CAUTION: ALWAYS POINT THE MUZZLE IN A SAFE DIRECTION!


16/59


STOCK ADJUSTMENTS1.ToadjusttheCheekPieceheight,slidetheCheekPiecerearwardtounlock.

2.LiftCheekPiecetotheelevatedposition.

3.SlideCheekPieceforwardtolockintoplace.

4.ReverseactioninordertoreturnCheekPiecetothelowerposition.

14

OPTIONAL FOLDING/TELESCOPING STOCK1.Toadjustthelengthofpull,depressboth(leftandright)

StockExtensionButtonsandslidestockforwardorback.

2.Tofold,depressthe

StockReleaseLatchand

foldtheStockforwardontherighthandside.

3.ToreturntheStock,

pulltotherearuntilthe

Stocklocksintoplace.NOTE:Stockisheldopenbydetentbutdoesnotlockopen.NOTE:TheFirearmcanberedwiththestockinthefoldedpositionwithclearanceforejectingcartridges.

2.

3.


17/59

IMMEDIATE ACTIONS IN CASE OF TROUBLE!

IF YOUR FIREARM STOPS FIRING: Perform the followingIMMEDIATE ACTIONS

RememberthewordSPORTS

15

1.SlapupontheMagazinetoensureagoodlockupintheLowerReceiver.

2.PulltheChargingHandleallthewaybackandhold.

3.ObservetheejectionoftheCaseorCartridge,checkChamberforanyobstruction.

4.ReleasetheChargingHandleandlettheBoltspringforward.

5.TaptheChargingHandletoassisttheBoltforwardtoensuretheBoltislocked.6.Squeezethetriggertore.


18/59

REMEDIAL ACTIONS

1.IfyourFirearmstillfailstoreafterperforming

ImmediateActionSteps1through5onpreviouspage,

checkagainforajammedcartridgecase.

2.Ifacartridgecaseisinthechamber,openthereceivers,removetheboltcarrier,andtrytotapout

thecasewithacleaningrod.

IF FIREARM STILL FAILS TO FIRE CHECK THE TROUBLESHOOTING SECTION IN

THIS MANUAL OR TAKE THE FIREARM TO A QUALIFIED GUNSMITH.

16

WARNING: IF YOUR FIREARM STOPS FIRING WITH A LIVE

ROUND IN THE CHAMBER OF A HOT BARREL, REMOVE

THE ROUND IMMEDIATELY. However,ifyoucannot

removeitwithin10seconds,removetheMagazineandwait15minuteswiththeFirearmpointinginasafedirection

(alwayscheckthattheSAFEdirectionremainssafe

duringthattime).Thiswayyouandthosearoundyouwontgethurtbythepossibilityofaroundcookingo.

KEEP YOUR FACE AWAY FROM THE EJECTION

PORT WHILE CLEARING A HOT CHAMBER.


19/59

BULLET STUCK IN THE BORE

17

WARNING: IF AN AUDIBLE POP OR REDUCED RECOIL IS EXPERIENCED DURINGFIRING, IMMEDIATELY CEASE FIRE: Then,

1.RemovetheMagazine. 2.LocktheBolttotherear.

4.Visuallyinspectand/orinsertaCleaningRodintotheBoretoensurethereisnotaBulletstuckintheBore.

DO NOT APPLY THE IMMEDIATE ACTIONS DESCRIBED ON PREVIOUS PAGES.IF A BULLET IS STUCK IN THE BARREL OF THE FIREARM, DO NOT TRY TO REMOVE IT.TAKE THE FIREARM TO A QUALIFIED GUNSMITH.

3.PlacetheSelector

LeveronSAFE.


20/59

BACK UP SIGHTS

18

TheFrontSightPostisthreaded-allowingittobemovedupordownforElevationAdjustmentswhen

ZeroingtheRearSight(seeZeroingYourSightsonnextpage).OncetheRearSightisZeroed,theFrontSightPostshouldnotbemoved.

REAR BACK UP SIGHT

TheRearBackUpSightfeaturestwoaperturesandwhennotusedcanbe

foldeddownat.Toreturntotheuppositionpresseitherthesidetabs.

NORMAL RANGE APERTURE:ThesmallerApertureisthedefaultsettingandisusedformostringsituations,optimizedfor100-300meters.

SHORT RANGE APERTURE:RotatetheNormalRangeApertureforwardanddowntorevealtheShortRangeAperture.Thisapertureisusedforrangesof0-100meters,allowingalarger

eldofview.

WhennotinusetheFrontandRearSightscanbefoldeddownat.Toreturnelevatesightspressdowneitherthesidetabsordownontheforwardportionofeithersighttoengagethespringloadedrelease.Toremovethesights,loosenandremovetheLockingBoltandguidethesightsforwardotheendoftheMIL-STD-1913PicatinnyTopRail.


21/59

ZEROING YOUR SIGHTS

19

FollowthestepsbelowtoestablishaZeroat25meters.YourMBUSTypeRieSightswillthenbesetwitha300-meterbattlesightzero.Withthisprocedure,onlythe

FrontSightPostandRearSightWindageKnobareadjustedsothatyoucanhityour

PointofAimat300meters.

25 METER ZEROING PROCEDURES

1.Placeanappropriate25MeterPaperSightingTarget25metersdownrangeandfollow

thestepsbelowtoestablishabattlesightzero.DonotmovetheFrontSightPostat

thistime.ItwassetatthefactoryandshouldbeveryclosetoZero.

(Bushmaster Sighting-In Targets, Part# QP-015K - see Bushmaster Catalog or Website)

2.Thesmaller(unmarked)RearSightApertureshouldbeintheUPposition.Center

theRearSightbyturningtheWindageKnobleftorright.Thiscreateswhatiscalled

MechanicalZeroWindage.

3.Checkthatyoureldofreisclear,andthatitissafetoshoot.Carefullyaimandre

agroupofthreeshotsatthecenterofthetargetbullseye.

4.Inspectyourtarget-ifyourshotgroupisnotinthecenterofthebullseye,thesquaresonthetargetsheetwillhelpyoucalculatetherequiredclicksnecessarytomove

yournextshotgrouptowardthebullseye.(Remember!-anychangesinelevationaretobemadebymovingthefrontsightpost)


22/59

ZEROING YOUR SIGHTS(contd.)

20

5.Ifyouneedtoraiseyournextshotgrouptogetclosertothebullseye,rotatetheFrontSightPostclockwiseoneclick.AFrontSightAdjustmentTool(Part#RAY-005-seeBushmasterCatalogorWebsite)isrecommendedforthisbutnotnecessarythesight

canbeadjustedwiththetipofaBulletasshownatright.Oneclickwillmovethebulletstrikepointoneverticalsquareonthetargetsheet.

6.Ifyouneedtoloweryournextshotgroup,rotatetheFrontSightPostcounterclockwise.(Oneclick-asbeforeequalsonesquare.)ChangesinWindagearemadewiththeWindageKnobontheRearSight.Tomovetheshotgrouptotheleft,turntheWindageKnobcounter-clockwise.Tomovetheshotgrouptotheright,turntheWindageKnobclockwise

7.Carefullyaimandreanother

groupatthecenterofthetargetbullseye.RepeatSteps5and6asrequiredtogetyourshotgroupsintothebullseye.

8.Onceyourshotgroupisontarget,yourSightsarezeroed,orcalibrated.

Elevation Adjustment Table

a.SightRadius:14.1in.

b.BulletStrikeAdjustment:

Impact Distance

0.485in./click 25m

1.939in./click 100m

5.817in./click 300m

Windage Adjustment Table

a.SightRadius:14.1in.

b.BulletStrikeAdjustment:

Impact Distance

0.323in./click 25m

1.293in./click 100m

3.878in./click 300m


23/59

DISASSEMBLING YOUR FIREARM

21

1.CLEARYOURFIREARM!(asdescribedonPage6).DisconnecttheSlingforconvenience.

2.PushtheRearTakedownPin(aBulletTipcanhelp)asfarasitwillgo.

PivotUpperReceiverfromLowerReceiver.

5.PushtheChargingHandlefullyforwardtodisconnecttheActuatorfromtheBoltCarrier.RemoveBoltCarriertotherear.

4.SeparateUpperandLowerReceivers.

3.PushinPivotPin(aBulletTipcanhelp).

NOTE:PivotPinintheLowerReceiverandTakedownPinintheUpperReceiverarecaptivated-meaningthattheyareheldinbytheirDetentsandSpringssotheycannotfalloutandgetlost.


24/59

DISASSEMBLING YOUR FIREARM(contd.)

22

6.RemovetheActionSpringAssembly

fromtheBoltCarrierbypressinginward

(towardfrontoftheBolt)andtwistingcounter-clockwiseuntiltheslotsonthe

carrierarein-linewiththeprongsonthefrontoftheActionSpringAssembly

GuideandthenremovetheAction

SpringAssembly.

7.RemoveFiringPinRetainingPin.

ABulletTipcanhelppushitout

oftheBoltCarrier.

8.RemoveFiringPinandFiringPinSpringoutofrear

ofBoltCarrier.


25/59


23

9.RemoveCamPinbyturningBoltCarrieronthesideandtappingoppositesideofBoltCarrier.CamPinshouldfallout.

10.RemoveBoltAssembly

fromBoltCarrierby

pullingstraightout.

12.RemoveExtractor

withSpring.

11.RemoveExtractorPinbypushingoutwithapunchorthetipofaBullet.

NOTE:PressrearofExtractortocheckSpringfunction.

CAUTION:ExtractorSpringmaypopoutandgetlost!

DISASSEMBLE USING STEPS11AND12ONLY WHEN DIRTY OR DAMAGED

SASS G O A


26/59


24

4.WiththeBarrelPlungerdepressed,turntheBarrelLockingLever.counter-clockwise

untilitstops.

5.PulltheBarrelAssemblyforwarduntilitreleasesfromtheTrunnion.

REMOVING THE BARREL ASSEMBLY

1.PullChargingHandleandlock

totherear.

2.RemoveHandGuardby

pushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.

3.Lowerthe

BarrelLocking

Leverand

depressthe

BarrelPlunger.

DISASSEMBLING YOUR FIREARM


27/59


25

3.RemovePistonRodandPistonSpring

throughthefrontoftheGasBlock.NOTE:TheGasPistonSystemcanbe

disassembledwiththeBarrelattached

orremovedfromtheUpperReceiver.

DISASSEMBLING THE GAS PISTON SYSTEM

2.PullGasRegulatorstraightouttoremove.

1.DepressRegulatorPlungerandrotateuntilitisfacingtowardthebarrel.

BUSHMASTER DOES NOT

RECOMMEND ANY FURTHER

DISASSEMBLY. ANY FURTHER

DISASSEMBLY MUST BE

PERFORMED BY A QUALIFIED

GUNSMITH.

INSPECTION CLEANING LUBRICATION


28/59

INSPECTION CLEANING LUBRICATION

26

AFTER FIRING YOUR FIREARM, cleanitassoonaspossibletomakethejobeasierandtoavoidallowingthedevelopmentofanycorrosion.When your Firearm has not been redyoushouldcleanitatleastonceortwiceayearifyou

liveinatemperateclimate,orasoftenasonceaweekinatropicalclimate.If you get your Firearm wet, cleanitassoonaspossibletoavoidtheonsetofcorrosionorrust.

UseahighqualityFirearmcleaningkitthatincludesacleaningrod;swabholder;cottonannelborepatches;pipecleaners;asmalltoothbrush;brasswirebristleboreandchamberbrushesandaCleaner/Lubricant/Preservative(CLPinArmyterminology).

After you have disassembled the Firearm, thoroughly clean, inspect and lubricate all

parts according to the techniques described on following pages.

Cleaning Kit with Patch Holder,

Bore & Chamber Brushes

A Quality Gun Oil,

Cleaner and PreservativeCotton Flannel

Bore Patches

PLUS, anoldtoothbrush

forcleaningpartsand

dislodgingdirtbuild-up,

andpipecleanersor

Q-tipsforcleaninghard

toreachareas.

THE BUSHMASTER ACR IS DESIGNED TO OPERATE WITHOUTLUBRICATION AND AFTER CLEANING, ALL ACTION PARTS SHOULD BE WIPED DRY.

DETAILED CLEANING TECHNIQUES


29/59

DETAILED CLEANING TECHNIQUES

27

NOTE:Theproceduresbelowdescribecleaningwithastandardmilitaryissuetypemulti-piecerodcleaningkit.Othercommercialcleaningkitsmayincludealternatecleaninginstructionswhichmaybejustaseective.

CLEANING THE BORE: TheboreofyourACRriehasLandsandGroovescalledriing.RiingmakesthebulletspinveryfastasitmovesdowntheBoreanddownrange.Itisdiculttopushanew,stiBoreBrushthroughtheBore.Youwillnditmucheasier,andmoreeective,topull your Bore Brushthrough the Bore.Also,becausethebrushwillcleanbetterifthebristlesfollowthegrooves(thisiscalledtracking),youwanttheBoreBrushtobeallowedtoturnasyoupullitthrough.

To make cleaning the Bore easier, you may remove the barrel from theUpper and replace once the Bore and Chamber are cleaned. The zero ofthe barrel will not be lost.

ALWAYS CLEAN FROM THE CHAMBER TOWARD THE MUZZLE.Followthesesteps:

1.AttachthreeRodSectionstogetherbutleaveeachoneabouttwoturnsshortofbeingtight.AttachthePatchHolderbutleaveittwoturnsshortoftightalso.

2.PointMuzzledown.HoldtheUpperReceiverorBarrelAssemblyinonehandwhileinsertingtheendoftheRodwithPatchHolderattachedintotheChamber.GuidetheRodcarefullythroughtheBore.

CAUTION:DonotlettheRodoritsthreadedendscratchtheLiningoftheBoreorFiringChamber.About2-3inchesoftheRodshouldprotrudeoutoftheMuzzle.

3.AttachtheHandleSectionoftheCleaningRodtotheendoftheRodstickingoutoftheMuzzle,andswabouttheBorewithapatchmoistenedwithCLP.

DETAILED CLEANING TECHNIQUES ( d )


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DETAILED CLEANING TECHNIQUES(contd.)

28

4.RemovePatchHolderandattachBoreBrush(leavingittwoturnsshortoftight).

5.PulltheBrushthroughtheBoreandouttheMuzzle.YoushouldbeabletoseetheRodtwistingasyoupullit-thisistheBrushtrackingintheriing.

NEVERreversethedirectionoftheBoreBrushwhileitisintheBore.

6.Afteronepull,takeothehandlesectionandrepeattheprocess.Afterthreeorfour

pulls,thethreerodsectionsandtheBoreBrushmaybecomescrewedtightly

together.Loosenthemupandrepeattheprocess.

7.SendapatchthroughtheBoreoccasionallytohelpcleanoutthecrudthatthebrush

isgettingloose.JustreplacetheBoreBrushwiththeRodTip(PatchHolder)andawetpatch.Pullitthrough.Ifyouleavetherodslooseagain,thepatchwilltrackinthe

riingasbefore.Butremember,alwayshavetheBorewet with cleanerbeforetrying

topullabrushthrough.

1.UseChamberBrushsoakedwithCLPtocleantheinsideoftheGasBlock.

2.Removecarbonandcleantopofbarreljust

forwardoftheGasBlockwherehotgasis

portedoutoftheGasRegulator.

3.WipedownPistonRodandPistonSpring.

4.Lubricateallpartsandwipedry.

CLEANING THE GAS REGULATOR AND PISTON SYSTEM:

CLEANING THE UPPER RECEIVER


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CLEANING THE UPPER RECEIVER

29

1.UsingaCLPtypeproduct,cleanallareas(insideandout)ofPowderFouling,CorrosionandDirt.

NeveruseawirebrushoranytypeofabrasivetocleantheAluminumUpperReceiverorBearingRails-youllscratchanddamagethenish.AToothbrushisgoodforlooseningany

dirtbuildup,andwontscratchtheReceiver.2.Wipeallcomponentscleananddry,andinspectforexcessivewear,corrosionormechanicaldamage.HaveaqualiedGunsmithreplaceanywornordefectivepartsbeforeringagain(orcontactBushmasterat1-800-998-7928forpartsneeds.)

1.CleanandinspectBolt,CamPin,FiringPin,FiringPinSpring,FiringPinRetainingPinand

ActionSpringAssemblythoroughly.CHECK THE BOLT:Lookforcracksorfractures,especiallyintheCamPinholearea.InspectBoltFace-Boltswithanypittingextendingintotheringpinholeshouldbereplaced.

CHECK THE CAM PIN:Ifitiscracked,orchipped,itshouldbereplaced.NOTE:CamPincanonlybeinstalledinBoltfromoneside-soEjectorwillbepositionedcorrectly.

CHECK THE FIRING PIN:Ifitisbent,cracked,tooblunted

ortoosharp,itshouldbereplaced.

CHECK THE FIRING PIN RETAINING PIN:Ifitisbent,orbadlyworn,itshouldbereplaced.IfO-ringisbroken,wornormissingitshouldbereplaced,thoughtheFirearmwillstillfunctionsafely.

WIPE ALL PARTS DRY BEFORE REASSEMBLING BOLT CARRIER. WARNING: IF THECAM PIN IS MISSING, DO NOT FIRE THE FIREARM IT COULD MALFUNCTION CAUSINGPROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

CLEANING THE BOLT, BOLT CARRIER & COMPONENTS...

CLEANING THE UPPER RECEIVER (contd )


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CLEANING THE UPPER RECEIVER(contd.)

30

CHECK THE EXTRACTOR AND EXTRACTOR SPRING:IftheExtractorischipped,orhas

brokenedgesintheareaofthelipthatengagesthecartridgerim,itshouldbereplaced.CheckthattherubberinsertisinsidetheExtractorSpring.CleanoanyCarbonbuildup

orpowderresidue.

NOTE:ThedesignoftheEjectormakesitsdisassemblyfor

cleaningsomewhatimpractical(i.e.wedontrecommendit).

MakesureyourBushmasterejectsemptycasesecientlybyfollowingthesestepsonamonthlybasis

(morefrequentlyifringblanks).

1.WiththeBoltremovedfromtheBoltCarrierandthe

Extractorinstalled,holditasshown,anddribbleafew

dropsofCLParoundtheEjectortoformapuddle.

2.TakearedordummycaseandplaceitunderthelipoftheExtractor.

Witharockingmotion,pressthecasedownagainsttheEjector.Since

theEjectorisspringloaded,someresistancewillbefelt.Pressonthecaseuntilitstopsagainsttheboltface.Easeowithyourthumb

slightlyandpressdownagain.Repeatseveraltimes.ReplacetheCLPfrequently.

OncethespringactionoftheEjectorissmoothandstrong,dryoanyexcesslubricant.

CLEANING/LUBRICATING THE EJECTOR

CLEANING THE BOLT, BOLT CARRIER & COMPONENTS

Extractor

Rock Empty CaseAgainst EjectorTo Lubricate

Ejector

CLEANING THE LOWER RECEIVER


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CLEANING THE LOWER RECEIVER

31

1.CleanallareasofPowderFouling,Corrosion,Dirtand

Rust.Again,neveruseawirebrushoranytypeof

abrasivetocleantheproprietarycompositepolymer

LowerReceiver.

2.Stocksmayrequirecleaningasnecessaryandshouldbecleanedwithmilddetergentandwater.Drystockorletairdryafterithasbeencleaned.

1.InsertPistonRod

andPistonSpring

throughGasBlock

andPistonRod

throughGuideBlock.

3.AttachtheBarrel

Assemblybyguidingthe

BarrelExtensionintotheTrunnion.Thepistonwill

passthroughanopening

intheTrunnion.

2.InsertGas

Regulatorandrotatetoeither

UorS

REASSEMBLING YOUR FIREARM

REASSEMBLING YOUR FIREARM (contd )


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REASSEMBLING YOUR FIREARM(cont d.)

32

4.GuidetheBarrelLockHandletotherightuntilitengageswiththeTrunnion.Once

seatedintotheTrunnion,turnthebarrellockingleverclockwiseuntilthereisapositive

stop(youmayhavetodepresstheBarrelPlungertostartrotation).TheBarrelLocking

Ringwillmakeaudibleclicksasthetorqueisbeingappliedforproperinstallation.

5.InstallHandGuardovertheBarrel

AssemblyandpushHandGuardRetainingPinclosedtolockintoplace.

REASSEMBLING YOUR RIFLE (contd )


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REASSEMBLING YOUR RIFLE(cont d.)

33

6.InsertBoltintoBoltCarrier.Twistintopositionso

CamPincanbeinserted(rememberCamPincanonly

beinstalledinBoltfromoneside,soifitdoesntt

rightaway,twisttheBolt180andtryagain).

7.OnceCamPinisinserted,aligntheridgeontheheadoftheCamPinsoitisparallelwiththeBolt.

WARNING: THE CAM PIN MUST BE INSTALLED IN THE BOLT GROUP. IF IT ISNT, YOURFIREARM CAN STILL FIRE AND COULD MALFUNCTION CAUSING PROPERTY DAMAGE,PERSONAL INJURY OR DEATH.

8.InsertFiringPinintoFiringPinSpring;

DropinandseatFiringPinand

SpringintoBoltCarrier.

9.LightlypresstheFiringPinintotheBolt

Carrier;whileholding,insertFiringPin

RetainingPin.

REASSEMBLING YOUR FIREARM (contd )


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34

10.InsertActionSpringAssemblyintotheBoltCarrierbypressinginward(towardfrontof

theBolt)andtwistingclockwiseuntilthetabsonthefrontoftheActionSpring

AssemblyGuideareinlinewiththeRetainingSlot.

NOTE:TheRecoilLugatthebackoftheActionSpringAssemblyshouldbepointingup

towardthetopoftheUpperReceiver.

NOTE:AfterinsertingFiringPinRetainingPin,FiringPinshouldnotfalloutwhenBoltCarrierAssemblyisturnedupsidedown

REASSEMBLING YOUR FIREARM (contd.)


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35

CAUTION: BUSHMASTER DOES NOT RECOMMEND THE PRACTICE OF SWAPPING

BOLTS BETWEEN DIFFERENT FIREARMS. DOING SO COULD RESULT IN

MALFUNCTION CAUSING PROPERTY DAMAGE,

PERSONAL INJURY OR DEATH.

11.InsertBoltCarrierassemblyintotheUpperby

aligningthenotchesontheCarrierwiththeBearing

RailsinsidetheUpper.Moveforwarduntilthe

lockinglugsengagetheTrunnion.

12.TojoinUpperandLowerReceivers,positionPivot

PinLugofUpperReceiverintoslotatfrontof

LowerReceiverandpushPivotPinintoplace.

CAUTION: AlwaysplacetheSafetySelectorLeveronSAFEbeforepivotingtheUpper

ReceivertoaclosedpositionontheLowerReceiver.

13.AfterReceiversareclosed,pushinTakedownPin.

14.Toensureproperreassembly,performthesafetyfunctioncheck(Seepage8)priorto

anyattempttoretheRie.

IftheSling,oranyotherAccessorieswereremovedforcleaningormaintenance,

theyshouldbereattachednow.

SLING REATTACHMENT

MAGAZINE DISASSEMBLY/REASSEMBLY


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36

1.UnloadMagazinefully.

2.TurnMagazinebaseup.PushdownandforwardonFloorplatewithabulletheadorotherappropriatedevice.

CAUTION:Floorplateisunderpressure,soensurecareuponremoval.Alwaysweareyeprotection.

MAGAZINE DISASSEMBLY/REASSEMBLY(contd.)


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( )

37

3.PullgentlyonMagazineSpringand

Followertoseparatefrom

Magazinebody.

4.WipedirtfromBody,MagazineSpringandFollower;thenlightlylubricateSpring.

5.OrientFollowerandMagazineSpringtoMagazineBodyandcarefullyinsertthrough

bottomofMagazineBody.

6.SlideFloorplateoverliponbottomof

MagazineBodyandcontinuesliding

FloorplateovertabsuntilrearofFloorplatecatchesonMagazineBody.

RE-CONFIGURING THE FIREARM


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38

STOCK CHANGE

1.PushtheRearTakedownPin

(aBullettipcanhelp)asfarasitwillgo.PivotUpperReceiverfromLowerReceiver.

2.PushtheStockRetainingPinout.3.Slidestockupwardtoseparate

fromlowerreceiver.

RE-CONFIGURING THE FIREARM(contd.)


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39

4.Replaceorinsertnewstock

downwardintocavity.

5.PushStockRetainingPinclosed.

6.PivotUpperReceiverandLower

ReceivertogetherandpushRear

TakedownPinclosed.

STOCK CHANGE

1.RemoveHandGuardbypushingthe

HandGuardRetainingPinthrough

asfarasitwillgoandslidetheHandGuardforward.

HAND GUARD CHANGE



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40

2.InstallalternateHandGuardoverthe

BarrelAssemblyandpushHand

GuardRetainingPinclosed

tolockintoplace.

1.LocateCharging

HandleReleaseButton.

2.Whileusingapunchorbullettip,depress

ReleaseButtonandslidetotherearwhilepullingtheChargingHandleawayfrom

theUpperReceiver.

CHARGING HANDLE



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41

3.StillholdingtheReleaseButtontotherear,swapChargingHandletotheopposite

sideandre-insertorinsertalternateChargingHandle.

1.RemoveMagazine.

2.UnloadandclearFirearm.

3.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwill

goandslidetheHandGuardforward.

4.LowertheBarrelLockingLeveranddepresstheBarrelPlunger.

5.WiththeBarrelPlungerdepressed,turntheBarrelLockingLevercounter-clockwiseuntilitstops.

6.PulltheBarrelAssemblyforwarduntilitreleasesfromtheTrunnion.

CHARGING HANDLE

CALIBER CONVERSION



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42

7.RemovetheBoltCarrieranddisassemble(Seepage22).

8.SelectproperboltheadforcaliberFirearmisbeingconvertedto.9.InstallBoltintoBoltCarrier.

10.ReassembleBoltCarrier.

11.EnsureBoltCarrierisremovedfromactionorislockedtotherear.

12.Selecttheproperbarrelforthecaliberrieisbeingconvertedto.

13.GuidetheBarrelExtensionintotheTrunnion.ThepistonwillpassthroughanopeningintheTrunnion.

14.GuidetheBarrelLockHandletotherightuntilitengageswiththeTrunnion.Onceseated

intotheTrunnion,turnthebarrellockingleverclockwiseuntilthereisapositivestop

(youmayhavetodepresstheBarrelPlungertostartrotation).TheBarrelLockingRingwill

makeaudibleclicksasthetorqueisbeingappliedforproperinstallation.

15.InstallHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.

16.InsertBoltCarrierintotheUpperbyaligningthenotchesontheBoltCarrierwiththeBearing

RailsinsidetheUpper.MoveforwarduntiltheLockingLugsengagetheBarrelExtension.

17.SelecttheproperMagazineandfollowinstructionsforoperatingtheFirearm( Seepage10).

CALIBER CONVERSION

PROBLEMS/SOLUTIONS


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43

Problem: Check For: What To Do:Firearm wont fre SelectorLeveronSAFE PutitonFIRE

ImproperAssembly AssembleCorrectly-

FiringPin Retaining Pin Goes In Back OfLarge Shoulder On Firing Pin

CorrectBarrelInstallation RemoveandRe-Attach

BoltNotLockedInChamber TapForwardAssist

TooMuchOilInFiringPinRecess WipeOutWithPipeCleaner

DefectiveAmmunition RemoveandDiscard

TooMuchCarbonOnFiringPin Clean

OrInFiringPinRecess

PROBLEM: FIREARM WONT FIRE

PROBLEMS/SOLUTIONS(contd.)


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44

Problem: Check For: What To Do:

Bolt wont unlock DirtyorBurredBolt Clean,orSeeQualiedGunsmith

Barrelnotproperlyinstalled Removeandre-attach

CamPinNotInstalled InstallCamPin

Problem: Check For: What To Do:Wont extract BrokenExtractorSpring SeeQualiedGunsmith

DirtyOrCorrodedAmmo RemoveStuckRound PushOutWithCleaningRod

CarbonInChamber CleanChamber

FoulingOrCarbonInExtractor CleanExtractor RecessOrLip

FrozenExtractor RemoveandClean

RestrictedMovementofBolt Remove,CleanandLube

CarrierGroup

PROBLEM: BOLT WONT UNLOCK

PROBLEM: WONT EXTRACT



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45

Problem: Check For: What To Do:Wont eed DirtyorCorrodedAmmo Clean

DirtyMagazine Clean

DefectiveMagazine Replace

TooManyRoundsinMagazine TakeOutExcess

MagazineNotFullySeated RemoveMagazineand

CleanMagazineWell



Double eed DefectiveMagazine Replace


Wont chamber DirtyorCorrodedAmmo Clean

PROBLEM: WONT FEED

PROBLEM: DOUBLE FEED

PROBLEM: WONT CHAMBER



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46


Wont unlock DamagedAmmo Replace

CarbonInChamber Clean

Dirt,CorrosionorCarbonBuildUp CleanLugs

inBarrelLockingLugs



Short recoil PistonBindinginGasBlock CleanGasBlock

AlignmentofGuideBlock Re-alignandtighten

BrokenGasPistonSpring Replacepart

ProperlyinsertedAction RealignActionAssemblySpring AssemblySpring

ProperSettingofGasRegulator SetCorrectlyforUnsuppressedor Suppressedre

BentGasPiston Replacepart

PROBLEM: WONT UNLOCK

PROBLEM: SHORT RECOIL



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47

Problem: Check For: What To Do:Bolt ails to lock FaultyMagazine Replace

ater last roundProperSettingofGasRegulator SetCorrectlyforUnsuppressedor

Suppressedre


Selector level binds DirtorSandUnderTrigger Clean

ProperAssembly RemoveandRe-Assemble

Problem: Check For: What To Do:Selector lever SelectorLeverDetentPlate SeeQualiedGunsmith

spins reely EngagementtoHammerSpring


Bolt carrier hung up DoubleFeed RemedialAction

BoundGasPiston Clean,CheckforGuideBlockAlignment

PROBLEM: BOLT FAILS TO LOCK AFTER LAST ROUND

PROBLEM: SELECTOR LEVER SPINS FREELY

PROBLEM: BOLT CARRIER HUNG UP

PROBLEM: SELECTOR LEVER BINDS

MAINTENANCE IN EXTREME WEATHER


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48

EXTREME COLD:CleanandlubricateFirearminawarmroomwithFirearmatroom

temperature.DonotlayawarmFirearmdirectlyonsnoworice.MovingFirearmfromcold

intowarmthwillcausecondensationwhichcouldkeepFirearmfromfunctioning.

HOT WET CLIMATES:CleanandlubeFirearmmorefrequentlyinmoistclimates.InspecthiddensurfacesofBoltandCarrierAssembly,UpperReceiver,and

Chamber/BarrelExtension(LockingLugs),andLowerReceiverforrustorcorrosion.

AlsopaycloseattentiontotheSpringLoadedDetentsontheFirearm.Wipeoany

hand/ngerprintsontheFirearmastheycanacceleratetheonsetofrustorcorrosion.

HOT, DRY CLIMATES:Takeextracarewithcleaningandlubricationasriewillbeexposedtoblowingsandandnedust,andextremetemperatureshifts(hotinthe

daytime,freezingatnight).Corrosionislesslikelytoformonmetalpartsinadry

climate.Firearmshouldnotrequireanylubrication.

HEAVY RAIN: DO NOT FIRE THE FIREARM IF WATER IS PRESENT IN THE BARREL:

ExcesspressurecancausetheFirearmtoexplode.

ALWAYSdrainanywaterfromBarrelpriortoring.DrytheBorewithaSwaband

CleaningRodifwet.

PARTS AND ACCESSORIES


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49

ThereareamultitudeofwaysfortheBushmasterACRtobeupgradedorcustomized

foryourspecicuse.Avarietyofbarrellengths,proles,caliberconversionkits,

alternatestocks,handguards,andcontrolpartsareavailable.Foracompletelistingof

replacementpartsandaccessoriespleaserefertotheBushmasterParts&AccessoriesCatalogorgoonlineatwww.bushmaster.com/acr.

Toplaceanordergoonlineorcall1-800-998-7928totalkwithaCustomerService

Representative.

OnlyauthorizedBushmasterpartsandaccessoriesarerecommendedforusewithyourACR.

COMPONENT VARIATIONS


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50

ThismanualisintendedtoinstructtheBushmasterACROperatorinallnecessary

aspectsofMaintenance,Disassembly,Reassembly,OperationandTroubleshooting

particulartothisrearm.

WithintheBushmasterACRlineofproductstherecanbeinnitevariationsofBarrelLengthandType,StockType,LowerReceivers,HandGuardsandSights.

COMPONENT VARIATIONS


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51

TheBushmasterACRyouown,orareusing,mayvaryinappearancefromthephoto-

graphsandillustrationsinthisManual,buttheconcepts,proceduresandpractices

recommendedinthisManualareuniversaltotheBushmasterACR.

LIMITED ONE YEAR WARRANTY


54/59

52

BushmasterFirearmsarewarrantedtobefreefromdefectsinmaterialsand

workmanship.AnysuchdefectofwhichBushmasterFirearmsInternational,LLCis

givenwrittennotice,asprovidedbelow,withinoneyearandtendaysfromthedateof

rstpurchasebyacustomerwillberemediedbyBushmasterFirearmsInternational,LLC.ThiswarrantyisgrantedbyBushmaster Firearms International, LLC, P.O. Box

1479, 999 Roosevelt Trail, Windham, ME 04062.

ToinitiateaWarrantyclaim,callBushmasterCustomerService(tollfree:8:30AMto

7:00PME.S.T.-MondaythruFriday-1-800-883-6229)togetaReturnMerchandise

Authorization(RMA)number.Warrantyclaimsshouldstate(inwriting)themodelandserialnumberoftherearmconcerned,adescriptionofthedicultyexperienced,and

thedateofpurchase.Therearmconcernedshouldbeshipped(transportationcharges

prepaid),totheWarranty Service Department, Bushmaster Firearms International,

LLC, 999 Roosevelt Trail, Windham, ME 04062.Firearmshipmentshouldbeinsured

bytheowner,asBushmaster Firearms International, LLC will accept no

responsibility for loss or damage in transit.

Shippingandinsurancechargesforthereturnofarearmtoitsownerwillbepaid

byBushmasterFirearmsInternational,LLCiftherelatedclaimisaproperclaim

forwarrantywork.

LIMITED ONE YEAR WARRANTY


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53

Under no circumstances shall Bushmaster Firearms International, LLC be

responsible for incidental or consequential damages with respect to economic

loss or injury to property, whether as a result of express or implied warranty,

negligence or otherwise.Somestatesdonotallowtheexclusionoflimitationofincidentalorconsequentialdamages,sotheabovelimitationmaynotapplytoyou.

BushmasterFirearmsInternational,LLCwillnotberesponsiblefortheresultsof

carelesshandling,unauthorizedadjustments,defective,lowquality,reloaded,or

improperammunition,corrosion,neglect,ordinarywearandtear,orunreasonableuse.

Furthermore,theliabilityofBushmasterFirearmsInternational,LLCunderthis

warrantyshallbelimitedsolelytotheobligationtorepairorreplacetherearm,andtopaytransportationandinsurancechargesforreturnoftherearmtoowner.

NOTE:HandgunsandlonggunsareclassiedasFIREARMSorDANGEROUS

WEAPONS.GunsaresurrenderedbyBushmasterFirearmsInternational,LLCwiththe

expressunderstandingthatitassumesnoresponsibilityforresalehandlingunderlocal

lawsandregulations.

PLEASE PRACTICE SAFE FIREARMS HANDLING!

WARNING IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED UNINTENTIONAL


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54

WARNING:IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED, UNINTENTIONALDISCHARGE COULD RESULT AND COULD CAUSE PERSONAL INJURY, DEATH,OR DAMAGE TO PROPERTY.

CAUTION:CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING AND FIRINGTHIS FIREARM. FOLLOW ALL INSTRUCTIONS ON THE PROPER HANDLING AND SAFE USE OF

THIS FIREARM - LIVES MAY DEPEND ON IT!

CAUTION:USE ONLY CLEAN, DRY, HIGH QUALITY COMMERCIALLY MANUFACTUREDAMMUNITION IN GOOD CONDITIONwhichisappropriatetothe5.56mmNATO/223Remingtoncaliberofyourrearm.Bushmasterdoesnotrecommendtheuseofremanufacturedorhandloaded

ammunitionbecauseitmaydamageyourrie.

WARNING:THIS FIREARM COULD CHAMBER A ROUNDifitisdroppedorjarredwithaloadedmagazineinplace-eitherwiththeBoltCarrierAssemblylockedtotherear,orinitsforwardposition.

A SAFETY NOTE REGARDING LEAD... Dischargingrearmsinpoorlyventilatedareas,cleaningrearms,orhandlingammunitionmayresultinexposuretolead,asubstanceknowntocausebirthdefects,reproductiveharm,andotherseriousphysicalinjury.Haveadequateventilationatalltimes.

Washhandsthoroughlyafterexposure.

ThisBushmasterOperatingandSafetyInstructionManualshouldalwaysbekeptwithyourBushmasterFirearm,andincaseofsaleortransfer,shouldbepassedontosubsequentowners.

Model:_______________________________________________________________

SerialNumber:________________________________________________________

SoldTo:______________________________________________________________ DateSold:_____________________________________________________________

NOTES


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NOTES


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56


59/59

Bushmaster Firearms International, LLC

999 Roosevelt Trail P.O. Box 1479 Windham, ME 04062

www.bushmaster.com

For more product information, visitwww.bushmaster.com/signin

Printed in U.S.A.Bushmaster is a trademark of Bushmaster Firearms International, LLC.Magpul is a trademark of Magpul Industries Corp. BFI-MAN-ACR

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