The Brownells AR-15 Chrome Lined Government Barrel Assembly 11.5 inches is built for M4-pattern performance with a hard chrome bore over button rifling. The assembly is prepared for faster installation with the slip ring assembly, an F-Marked front sight base, and the correct handguard cap already installed. It is manufactured to strict inspection standards and marked for 5.56x45mm NATO use with 1-7 twist.
Key Features
Hard chrome bore over button rifling for durability and fouling resistance
5.56x45mm NATO chambering for consistent compatibility with NATO-spec ammunition
1-7 twist rate supports 62 grain and heavier projectiles
4150 chrome moly steel construction
Pre-installed slip ring assembly, F-Marked front sight base, and handguard cap for a ready-to-install build
A dependable, chrome-lined short-barrel assembly option for M4-style builds that need a prepared, install-ready setup.
