AERO PRECISION AR15 5.56mm Bolt Carrier Group (APRH100019)

Machined from 8620 Tool Steel (Carrier) and 9310 Carpenter Steel (Bolt)Shrouded firing pinNickel Boron Coating inside and out (Bolt, Carrier, and Gas Key)Forged Mil-Spec gas key attached with Grade 8...

M16-cut carrierMachined from 8620 steelCarrier has forward assist serrationsBlack Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaningProperly staked...

9mm Blowback AR-15 Bolt Carrier GroupGLOCK and COLT Magazine CompatibleMilSpec 8620 Heat Treated Steel CarrierReliable External AR-15 Style ExtractorFull-Auto CompatibleCompatible with Most AR-15...

Black Phosphate CoatingHPT/MPI Tested BoltChrome LinedMil-Spec Phase 5's Mil-spec AR-15 bolt carrier features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt...

Carrier Features: Material: Billet carrier machined from 8620 steel and case hardened; Finish: Black Nitride - advanced lower friction coating that minimizes the need for lubricants and cleaning; Gas...