Advanced Armament Corp

AAC Threaded pistol barrels are precision machined from heat treated 416R stainless steel. These barrels feature a durable corrosion resistant matte black Isonite QPQ finish. The barrel features a 1:16 twist rate and this particular barrel is threaded 13.5x1LH - Specifications and Features: AAC Replacement Barrel 103551 - GLOCK 19 9mm Luger - Threaded 13.5x1LH - 1:16 Twist Rate - 416R Stainless Steel - Isonite QPQ Finish - Matte Black