The Tiger Rock Inc. BR168-SC 5.56 NATO 16" Inch Government Profile Rifle Barrel offers unmatched accuracy and reliability, perfect for competitive shooters and enthusiasts alike. Crafted from premium 4150 heat-treated chrome moly steel, its black nitride finish maximizes corrosion resistance while ensuring optimal performance. With a 1:8 twist rate, this barrel guarantees bullet stability and precision. Length: 16" 5.56 NATO compatibility Government Profile design 1:8 Twist rate for enhanced accuracy .750" gas block diameter Carbine length gas system 1/2"x28 thread pitch Constructed from 4150 heat-treated chrome moly steel Durable black nitride finish Made in the U.S.A. Compatible with AR-15 rifles Elevate your shooting experience with this meticulously designed barrel, built for excellence.