Whether you are building a new modern sporting rifle, or filling our your spare parts kit, you need a good quality bolt carrier group. This is a "full auto" profile bolt carrier group that is slightly heavier than a "semi auto" bolt. This benefits shorter carbine length gas systems and suppressed firearms. Both carrier types are interchangeable and there is no restriction on the ownership of a "full auto" BCG in a semi automatic gun.
These bolt carrier groups are manufactured for Wilson Combat by some of the finest Mil-Spec contractors, and are easily among the best 5.56 AR rifle bolts on the market. They are precisely machined, finished and hardened to insure long term reliable performance.
Specifications and Features:
.223 REM/5.56 NATO/.300 AAC BLACKOUT
158 Carpenter steel bolt, shot peened and MPI and HPT tested
4140 cold steel extractor, cold drawn per Mil-Spec
8620 steel carrier, Parkerized externally and chrome lined
Mil-Spec type gas key, secured with grade 8 fasteners and properly staked
Full auto profile
Drop in fit for any quality 5.56 case head based AR