This upgraded nickel-boron bolt carrier group is an eye catching addition to your AR build. Mil-spec dimensions and coating ensure the highest quality and correct component interface. Enhanced lubricity assists in ensuring reliability during firing and easier clean-up afterwards.


Features
Machined from 8620 Tool Steel (Carrier) and 9310 Carpenter Steel (Bolt)
Shrouded firing pin
Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key)
Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked.
5.56 Bolt is shot Peened and MPI
Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
Tool Steel Extractor