Our upgraded .308/7.62 Nickel Boron BCG is an eye catching addition to your AR build. Exacting dimensions and superior coating ensure the highest quality and correct component interface.Features:No Aero 'A' LogoMachined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)Nickel Boron coatedBolt is machined from 9310 steelMPIForward Assist serrationsWeight: 17.92ozBCG Includes:Bolt carrierComplete boltFiring pinCam pinRetaining pinCompatible with LR-308, SR25 and DPMS Pattern