Brownells Carbine-Length Barrel Group 5.56x45mm 16", Black

Brownells government barrel assemblies, produced by a trusted US government contractor, are engineered to the highest standards for M4 barrels. Featuring a hard chrome bore over button rifling, these barrels undergo rigorous testing, including high-pressure testing, magnetic particle inspection and gauging, ensuring flawless performance. The assemblies come pre-assembled with a slip ring, non-marked front sight base and an appropriate handguard cap, tailored to the barrel length. M4 Carbine barrels include a round cap, while rifle length barrels receive a triangle cap. Made from 4150 chrome moly steel with a 5.56x45mm chamber and 1:7 twist rate, these barrels deliver optimal performance with 62 grain and heavier bullets. All components are sourced from reputable US-based partners, ensuring mil-spec quality.