KAK 18" 308 Rifle Gas AR10 Barrel- Nitride* Chamber- 308 Winchester/ 7.62 NATO* Length- 18"* Gas system- Rifle Length* Gas Block Size- .750* Threads- 5/8-24* Finish- Melonite* Twist- 1:10* Material- 41V50 Chrome Moly Vanadium * Extension- DPMS LR-308* Barrel dimpled for gas block set screw* Marked for Caliber and Twist* Weight- 44.6 OZ* Fully Made In House From KAK Industry Produced BlanksMedium Contour As a high volume contract manufacturer for the firearms industry, KAK is able to leverage its machining capacity to bring the same quality parts that we provide to some of the biggest names in the industry, straight to the retail customer. We manufacture our barrels from the raw material all the way to the complete product, all under our own roof. Our barrels are fully inspected through the entire process, including air-gauging the bores, physical measurements of the threads and outer diameters, and 100% gauging of the headspace tolerance. Our OE-Spec line provides you with the quality you demand and the value you desire.