Elevate your firearm's capabilities with the Guntec USA BAR-16-RPVD-HP-CAR 16 5.56mm barrel, engineered for superior accuracy and longevity. Precision-crafted from 4150 chromoly steel and chambered for 5.56x45, this barrel features a 1:7 twist rate to enhance bullet stabilization and trajectory. Its high-polished RPVD coating not only enhances visual appeal but also significantly improves durability and lubricity. 4150 Chromoly Steel 5.56/.223 Chambered in 5.56x45 1:7 Twist 1/2 by 28 Thread M4 Contour Profile Markings Spiral Engraved Near Break .750 Gas Platform System High Polished RPVD Coating Finish Aesthetic Coating Which Improves Durability & Lubricity M4 Feed Ramps Carbine Length Gas System Weight: 32 oz Transform your shooting experience with this high-performance barrel, designed for enthusiasts seeking excellence.