Machined to exact tolerances and pre-fit for simple, drop-in installation, the Lone Wolf Arms Dusk 19 1/2x28 Threaded Barrel for Gen 3 / 4 Glock® 19 Pistols features heat-treated stainless steel construction with a corrosion-resistant finish for unparalleled strength and reliability. Hood fluting protects against premature surface wear on reciprocating surfaces, while the shallow recessed crown and button-rifled bore offer greater shot-to-shot accuracy. The improved feed ramp design ensures maximum chamber support and ensures consistent, jam-free operation. 1/2x28 threads. Includes knurled thread protector.