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Wilson Combat 5.56 Bolt Carrier Assembly, Black Nitride. Showcasing a black nitride finish, this Wilson Combat bolt carrier assembly is manufactured for 5.56 chambered AR-15 rifle platforms. The bolt material is aerospace grade 9310 MPI instepects steel and the assembly is drop in fit for any quality AR rifle (.223/5.56 NATO, .300 Blackout, .204 Ruger, or 7.62X40 WT). Each individual piece is precisely machined, finished, and hardened to ensure long term proper gas system functioning and reliability. This assembly is perfect for your next custom rifle build, pair this up with a new handguard and some extra ammunition for your next range day.

Manufactured by Wilson Combat’s finest domestic, Mil-Spec contractors these are among the best AR rifle bolts on the market and the same bolt carrier groups we use as the basis of our renowned custom rifles!

The bolt is precision machined from aerospace grade 9310 tool steel, shot peened for increased strength and includes a tool steel extractor and ejector, appropriate extractor spring, and is MPI (Magnetic Particle Inspected) and randomly batch HPT (High Pressure Tested).

The extractor is 4140 gun quality, annealed, cold drawn steel per the Mil-Spec.

With a complete Black Nitride finish, the 8620 steel carrier includes a proper machined Mil-Spec gas key secured to the carrier via Grade 8 fasteners and properly staked in our shop during final inspection.