Kick off your 8.6 Blackout AR pistol or SBR build with the CMMG 12-1/2 inches barrel, featuring a sleek, corrosion resistant nitride finish for added durability and performance. This barrel is designed to be compatible with CMMG Mk3 and DPMS Gen 1 High Pattern LR 308 upper receivers, making it the ideal choice for crafting a compact, high-performance rifle setup. Pistol gas port location for optimal gas flow and reliable cycling in short barreled setups