VALUE-LINE 308 Winchester 16" Mid Gas AR10 Barrel- Nitride* Chamber- 308 Winchester/ 7.62 NATO* Length- 16"* Gas system- Mid Length* Gas Block Size- .750* Threads- 5/8-24* Finish- Nitride* Twist- 1:10* Material- 41V50 * Extension- DPMS LR-308* Barrel dimpled for gas block set screw* Marked for Caliber and Twist* Weight- 41.3 OZ* Fully Made In House From KAK Industry Produced BlanksMedium Contour All Barrels Are Air Gauge Inspected for Correct Bore Size & Tolerances, completed Barrels are Inspected for Proper Headspace using Calibrated Gauging.