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CORE15 OWNERS MANUAL
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Safety RulesSafety SelectorLoading the MagazineLoading Magazine into RifleChambering a RoundChambering a Round (with Carrier in Battery) Unloading the RifleUse of Bolt CatchLocking Bolt Carrier to RearForward AssistDisassembly of RifleRemoving Bolt and CarrierRemoving the Charging HandleGas SettingsDisassembly and Adjustment of PistonSchematicsCleaning InstructionsWarranty and RegistrationNotes
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7-89-10
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Table of Contents
core rifle systems advises thorough cleaning of any rifle before use.STOP
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Disclaimers: CORERifleSystemswillnotberesponsibleorliable,directlyorindirectly,inanywayforanyloss,damage,injuryordeathincurredbyitsfirearms.UserassumesfullresponsibilitywhenusinganyCORERifleSystemRifle.
Misuseorcarelessnessmayresultinseriousinjuryand/ordeathtotheuserorbystanders.CORERifleSystems,canandwillinnowayberesponsibleformisuseorcarelessusebytheuserofitsfirearms.
Chambering,firing,orattemptingtochamberorfirearoundnotintendedforuseinthisfirearmisextremelydangerousandcanresultinseriousinjuryand/ordeathtotheuserorbystanders.Useonlynewammunition,markedwiththesamemarkingsasthefirearmthatitisintendedtobeusedin.
Safety Rules:1. ALWAYSkeepthegunpointedinasafedirection.2. ALWAYSkeepyourfingeroffthetriggeruntilreadytoshoot.3. ALWAYSkeepthegununloadeduntilreadytouse.4. ALWAYSassumeeveryfirearmisloaded.5. ALWAYSknowyourtargetandwhatisbehindit.6. ALWAYSkeepfirearmsandammunitionoutofthereachof children.
WARNING:
WARNING:
WARNING:
Safety Selector: Proper use of the safety selector is crucial to the safe use of the firearm. The safety selector is located on the left side of the gun, just above the pistol grip. To ensure the weapon is on “SAFE” the pointer on the safety selector will be pointed at the insignia showing a bullet with a circle and a line through it. To disengage the safety selector to allow the gun to fire, rotate the safety selector lever to the insignia with a bullet without a line through it. This will allow the gun to fire.
NEVER take the weapon off “SAFE” until you are ready to shoot.
Above picture shows “SAFE”
Above picture shows “FIRE”
WARNING:
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Loading the MagazineToloadthemagazine,insertammunitiononecartridgeatatimeverticallyintothemagazine.Ensurethateachcartridgeseatstotherearofthemagazine,ascartridgesthatarenotcorrectlyseatedmaycausecartridgesthereafternottobedepressedintothemagazine.Oncethemagazinehasbeenfullyloaded,itwillnotreadilyallowmoreroundstobeinserted.Donotattempttooverloadthemagazineasthismaybend/dentcartridgesandposeahazardtotheuserwhenattemptingtofirethedamagedcartridge.
Loading the RifleToloadtherifle,firmlyinsertaloadedmagazine,withthebulletspointedtowardsthefrontofthefirearm,intothemagazinewelllocateddirectlyinfrontofthetrigger.Makesurethemagazineiscompletelyseatedbystrikingthebottomofthemagazinewithanupwardmotionwiththepalmofthehand.
Load magazine firmly into magazine well.
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Chambering a Round: (With the Bolt Carrier Locked in the Rear Position)Oncealoadedmagazinehasbeeninsertedintothemagazinewell,depresstheboltcatchlocatedontheleftsideofthefirearm.Thiswillallowtheboltcarriertomoveforwardintobatterytherebyloadingthefirearm.
Chambering a Round: (With the Bolt Carrier in Battery)Oncealoadedmagazinehasbeeninsertedintothemagazinewell,usethecharginghandlelocatedontheupperreceivertochargetheweapon.Todothis,graspthecharginghandlewithtwofingers,oneoneachsideoftheupper,andpullcharginghandletotherear.Oncethehandlehasreacheditsfullrearwardtravel,release,allowingthecharginghandleandboltcarriertomovebackforwardintobattery,andtherebyloadthefirearm.
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Bolt catch is Shown Above.
Pull Charging Handle to rear
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4PAGEUnloading the Rifle:Placethefirearmon“SAFE”.Usethemagazinereleasebuttonlocatedontherightsideofthefirearmtoreleasethemagazine.Oncethemagazineasbeenremoved,pullthecharginghandletotherearofthefirearm,bringingthecharginghandletoitsfulldistanceback.Thiswillallowthecartridgechamberedinthefirearmtobeextractedandejectedsafelyfromthefirearm.
Use of Bolt Catch:Whenthemagazinehasbeenemptied,theboltwilllockintherearwardposition.Thiswillbedoneautomaticallybytheboltcatchtovisuallyshowtheuserthatthefirearmisoutofammunition.Toreloadtheweapon,ensurethefirearmison“SAFE”.Thenremovetheemptymagazinebyutilizingthemagazinereleasebuttonontherightsideoftheguninfrontofthetrigger.Oncetheemptymagazinehasbeenremoved,aloadedmagazine
canbeinsertedintothemagazinewell.Withthefullmagazinefirmlyseatedinthemagazinewell,pushtheboltcatchlevertoreleasetheboltcarrier,therebychamberingaround.
Pull Charging Handle to rear
Bolt Catch is shown above.
Magazine Release Button
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Locking Bolt Carrier to Rear:Theboltcarrierwilllocktotherearpositiononcethemagazineisempty.Thisallowstheusertovisuallyverifythattherifleisindeedoutofammunition.Inordertolocktheboltbackwithoutamagazineinserted,itisnecessarytomanipulatetheboltcatchleverawayfromtheupperwhileholdingtheboltintherearwardpositionwiththecharginghandle.Atthatpointgentlyeasethecharginghandleforwardensuringtheboltcaughtonthecatch.
Forward Assist:Iftheboltcarrierfailstotravelallthewayforward,theForwardAssistcanbeusedtoseattheboltcompletely.Tousethisfeature,ensurethattherifleison“SAFE”,andremainspointedinasafedirection.ThenswiftlystriketheForwardAssistinaforwardmotionwiththepalmofthehandtopushthecarrierforwardandcompletelyintobattery.
Bolt Catch is shown above.
Forward Assist is shown above
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Disassembly of the Rifle:Todisassembletherifleensurethatitison“SAFE”andvisuallychecktomakesuretheweaponisunloadedbypullingthecharginghandletotherearoftheweaponandvisuallyinspectingthechambertomakesuretherifleisclearedofanycartridges.Allowtheboltcarrierandcharginghandletoreturntotheforwardposition.
Pushthetakedownpintotherightallowingtheupperreceivertopivotdownexposingthetriggergroupandthebackoftheboltcarrier.Toseparatetheupperreceiverfromthelowerreceiver,pushthepivotpin,locatedinthefrontofthelowerreceiver,totheright.Thiswillallowtheupperreceivertoberemovedfromthelowerreceiver.
Removing Bolt and Carrier:Withthegundisassembled,pullthecharginghandletowardstherearjustenoughtounlockthecharginghandlelock.Grasptherearoftheboltcarrierandpullittowardstherearofthereceiver.Theboltcarriershouldslideeasilyouttherearofthereceiver.
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Removing the Charging Handle:Oncetheboltandboltcarrierhasbeenremovedfromtheweapon,pullthecharginghandletotherearofthereceiver,oncerearmotionhasstopped,allowthecharginghandletodropdownintothereceiver,thenremoveitfromthereceiver.
Piston Assembly Gas Settings: (Applies to Gas Piston Rifles Only)
Ourrifle’spistonsystemcomeswithagasblockthathasafourpositionadjustablegasplug,whichallowstheshootertoadjusttheamountofgaspressureallowedtocyclethesystemandaccessthedriverodforcleaningandmaintenance.Thefoursettingsarepositionedatthe9o’clock,12o’clock,1o’clockand3o’clockpositionswhilefacingthefrontofthegasblock,andarecalled“Removal”,“High”,“Low”,and“Off”.
The9o’clock,or“Removal”,positionsunlocksthegasplugfromthegasblock.Thispositionwillallowyoutoremovethegaspluganddriverodforcleaningandmaintenance.Oncedone,replacethegaspluganddriverodintothegasblockatthe9o’clockposition.Depressthedetentbuttonandrotatetothedesiredgassettingforfiring.
The12o’clock,or“High”,positionopensthegasplugcompletely,allowingthefirearmtousethetotalamountofgaspressure.Withthisposition,youmayfiresemi-automaticastheriflewasoriginallydesignedto.Ifthefirearmisfunctioningcorrectly,youwillbeexpellingemptycasingsbetweenthe2and4o’clockpositions(roughlyaroundtherightshoulder)fromthereceiverconsistently. 7PAGE
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The1o’clock,or“Low”,settingisrecommendedforusewiththesoundsuppressor.Asuppressorincreasestheamountofbackpressurefromtheroundexitingthebarrel.Thisincreasedpressurecausesanincreaseintherateoffire.Byturningthegasplugtothe1o’clockposition,theincreasedamountofbackpressurewillnotenterintothepistonchamber,allowingtheARtofunctionattherateoffireitwasdesignedtohave.Thelastpositionisthe3o’clock,or“Off”,position.Thiseffectivelystopsthefirearmfromcyclingitsaction.Whiletheroundinthechamberwillstillfire,allthegasesareventedoutthefrontofthepistonchamberandwillrequiretheshootertomanuallyworktheactionoftheARbypullingbackonthecharginghandle.Essentially,thisturnstheARintoabolt-actiongun.Thispositionisusedmostlybythosewithsuppressorsthatdonotwantthesoundoftheactionoverpoweringthesoundssuppressedbythesuppressor.Itisalsousedwitha.22LRconversionkitbyremovingthedriverodandturningthegasplugtotheoffposition.
Disassembly of Piston:Todisassemblethepistonsystemforcleaning,ensurethegunison“SAFE”andvisuallyinspecttomakesurethechamberisempty.Rotatethedetentknobtothe9o’clockposition,andpullthepistonandrodtowardstheendofthemuzzle.Thiswillremovethepistonandrodfromthegun.
DONOTremovethegasblockfromthebarrelasthegasblockisspaced,linedup,andtorquedtoprecise
tolerances.Removingandincorrectlyreinstallingthegasblockcancauseseriousdamagetotherifle,and/orinjuryandinseriouscircumstances,death,totheuserand/orbystanders.
WARNING:
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Upper Receiver, Bolt & Bolt Assembly:
Buttstock Assembly
1.FiringPin2.BoltGasRings 3.Bolt4.ExtractorSpring5.ExtractorSpringInsert6.Extractor7.Ejector8.EjectorSpring9.EjectorRollPin10.ExtractorPin11.BoltCarrier12.CamPin13.FiringPinRetainingPin14.BoltCarrierKey15.BoltCarrierKeyScrew
BUFFERASSEMBLY
#40507
CARBUFFERSPRING#40510
6POSITIONTELESTOCKASSEMBLY
COLORBUTTSTOCKTUBELOCK
#1040
RECEIVEREXTENSIONNUT
#1032
6POSITIONCARBINERECEIVEREXTENSION
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CORE15
BUFFERRETAINER
BUFFERRETAINER SPRING
TAKEDOWNPINSPRING
TAKEDOWNPINDETENT
TAKEDOWNPIN
SAFETYDETENT
SAFETYDETENTSPRING
STANDARDGRIP
LOCKWASHER
STANDARDGRIPSCREW
HAMMERANDTRIGGERPINS
MAGAZINECATCHBUTTON
MAGAZINECATCHSPRING
TRIGGERGUARDPIVOT
ROLL PIN
TRIGGERGUARD
ASSEMBLY
TRIGGERSPRING
TRIGGER
DISCONNECTOR
DISCONNECTORSPRING
PIVOT PIN
PIVOT PINSPRING
PIVOT PINDETENT
MAGAZINECATCH
BOLTCATCHSPRING
BOLTCATCHPLUNGER
BOLTCATCHROLLPIN
BOLTCATCH
SAFETYSELECTORLEVER
HAMMERSPRING
HAMMERWITHJPIN
LOWERRECEIVER#100258
CORE15 Semi-Auto Lower Receiver
Cleaning Instructions:ItisrecommendedtouseBreach-to-Muzzle®guncleaningproductsbyOtisTechnologyforpropercareandmaintenanceofCORERifles.
1.Runapatchwithsolvent:Usingapatch,createtheappropriatesizedswab.Addacoupleofdropsofsolventandpullthepatchfromthebreechtothemuzzle.
PRIORTOCLEANINGBESURETHEFIREARMISUNLOADED!
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Cleaning Upper Receiver, Bolt Carrier, & Charging Handle:Wipeallareasthatcomeincontactwiththeboltcarrierorcharginghandledownwitharagmoistenedwithoil.Thiswillcleanandlubricatethereceiveratonetime.Useasmallbrushtobrushawayanypowderresiduethatmaybebuiltuparoundthefeedrampsofthebarreltoensuresmoothfeedingofammunitionfromthemagazineintothechamber.Wipetheboltcarrierdownwithanoilmoistenedragtoremovepowderresiduethathasbuiltuponit.Dripadropofoilontothebacksideofthefiringpintolubricatethemovementofthefiringpinandcampinintheboltcarrier.
Cleaning the Lower Receiver:Useasmallbrushorguncleaningragtoremoveresiduefrominsidethelowerreceiver.Applyasmalldropofoiltotriggerandhammerspringsforsmoothoperationofboth.Wipeoutmagazinewellwithanoilmoistenedragtoremovepowderdeposits
For more information on Breech-to-Muzzle® cleaning
with Otis Technology visit ww.otistec.com
2.RuntheBrush:Runtheappropriatesizedbrushfromthebreechtothemuzzletoloosenandremovecopperandleaddepositsorotherfouling.
3.Runadrypatch:Useaclean,drypatchandpullthroughfromthebreechtothemuzzletoremoveanyfoulingloosenedbythebrush.
4.Repeatasoftenasisnecessaryuntilclean.
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CORE Rifle Systems Warranty:TheProductyouhavejustpurchasedhasthesimplest,mostplainlywrittenwarrantyyouwilleverread.Thereisnofineprint.ThisCORERifleSystemsproducthasbeenmanufacturedandassembledwithpainstakingcareandprecisionbyproudU.S.VeteransandCraftsman,trainedbythebestthereis.Ifanythingisnotasitshouldbe,accuracyincluded,ifanythingmalfunctions,simplycontactoneofourprofessionalsandwewillworktomakeitright.Ifyou’rethe5thownerandtheriflehasseen40k+rounds,itsimply…doesn’t…matter.Westandbehindourriflesandwetakecareofourcustomers.Wewillcoveranythingotherthannormalwear&tear,abuseorneglect.
Westandbehindourproductsandwetakecareofourcustomers.Thatisourpromiseandyourassurance.”
Warranty Service and Product Registration:Totakepartinouramazingwarrantyandtoregisteryourproduct,pleasevisitCORERIFLESYSTEMS.COM.ShouldyouneedtofileaclaimPLEASEDONOTCALL,simplyvisitourwebsite,createaticketandwewillworktoresolveyourissuewithasmuchexpediencyaspossible.
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Notes:
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For more information about the CORE Rifle Systems family of products, visit your local gun dealer, or visit our website at www.coreriflesystems.com
CORE RIFLE SYSTEMS4600 W. Highway 326 • Ocala, Florida 34482
Telephone: (352) 401-9070www.coreriflesystems.com