Description
Toolcraft AR-10 / 308 / 6.5 Creedmoor Bolt Carrier Group – Black NitrideThis Toolcraft 308 / AR10 / 6.5 Creedmoor Black NitrideBCG is trusted by weapons manufacturers and custom rifle builders around theworld. Now you too can get this outstanding BCG at a fraction of the cost.The bolt is CNC machined from heavy duty 9310 alloy steel. 9310 steel has a high core & fatigue strength rating, a high hardenability rating, and when properly treated it is actually about 7% stronger than the “mil-spec” Carpenter 158 steel. The bolt is shot peened (stress relieved) and finished with the same Black Nitridefinishas the carrier. The bolt also comes completely assembled with mil-spec gas rings, and a high tensile 4140 steel extractor.The bolt is also Magnetic Partical Inspected (MPI) for quality assurance.The Black Nitride Carrier is machined from 9310 steel. The gas key is made of QPQ Nitride finished 8620 steel, fastened to the carrier using Grade 8 screws and then properly staked. The carrier also features forward assist serrations.IncludedBlack NitrideBoltAssemblyAvailable with standard bolt or a High Pressure Bolt featuring a reduced aperture firing pin channeland double ejector. Recommended for 6.5 CreedmoorBlack NitrideCarrierw/ properly staked Gas KeyCam Pin8740 Stainless SteelFiring PinFiring Pin Retaining PinTechnical Specs:Gas system: Direct ImpingementCaliber: .308 Winchester/ 6.5 Creedmoor / 6mm CreedmoorFinish: Black Nitride (bolt, carrier, gas key, cam pin)Bolt: 9310 Steel(Magnetic Particle Inspected)Carrier: 8620 Aircraft Grade SteelFiring Pin: Mil-spec 8740 steel with hard chrome finishGas Key: Mil-Spec w/ properly staked Grade-8 screws & Permatex No. 3 sealedCam Pin: 8620 Steel w/ QPQ Black Nitride Finish
