Description
Sons of Liberty AR-15 M16 Profile 5.56/300 BLK Bolt Carrier Group – Nickel Teflon Coating (NTC)Sons of Liberty goes to show that in order to make the best products in the industry, you don’t have to add bells and whistles. It takes consistently delivering a product that performs to a professional standard. That is what SOLGW does with their mil-spec line of components.BoltPrecision machined from Carpenter Technology No. 158 chrome-nickel alloyHeat treated per mil-spec,Shot peened per ASTM B851/SAE AMS2430S,Vibratory tumbledIndividual high pressure/proof (HP) testFull Auto test fired at assemblyIndividual magnetic particle inspection ASTM E1444/E1444M (MP)Nickel Teflon CoatedMarkings deep laser engraved (SP=Shot Peened, HP=High Pressure Tested, MP=Magnetic Particle Inspection.)ExtractorPrecision machined from 4340 tool steel alloy per SAE AMS6415T/AMS6484D (vs 4140)Heat treatedShot peen per ASTM B851/SAE AMS2430SExtractor Retaining Pin:Precision machined and ground S7 Tool SteelHeat treated per ASTM A681-08Shot peened per mil-spec printManganese phosphateExtractor SpringTactical Springs/Sprinco 5 coil, ASTM Grade A401 Chrome Silicon wire stockHeat treatedStress relieved, Molybdenum-Disulfide infusedCryogenic processed (Hidden post winding)Mil-spec black insert/synthetic elastomer extractor buffer (nitrile-butadiene, shore hardness 80 /-5 durometer per MIL-PRF-6855)EjectorS7 Tool SteelHeat treated per ASTM A681-08Shot peened per Mil-SpecNickel Teflon CoatedEjector Spring:Heat treatedMil SpecGas RingsStandard stainless steel per Mil-Spec X3CarrierMachined from AISI 8620 aircraft quality alloy per ASTM A108/A322-13Full auto profileHeat-treatedCarburized/strain relieved, hard chrome borePrecision ground gas key interfaceSons of Liberty Battle Flag logo deep laser engravedNickel Teflon CoatedGas KeyMachined from 4130 Chromoly steel alloy per ASTM A108/A322-13Heat-treated; hard chrome internalNickel Teflon CoatedPermatex sealedGrade 8 hex screws torqued and staked Hidden per mil-specCam PinPrecision machined 4340 Chromoly steel alloy per SAE AMS6415T/AMS6484DHeat-treated/processed per mil-specNickel Teflon CoatedSolid film lubricant applied and cured per mil-specFiring PinPrecision machined 8640 steel alloyHeat treated/processed per mil-specHard chrome plateFiring Pin Retaining PinPrecision machined from 1038 carbon steelHeat-treated/processed per mil-specManganese phosphate
