Lone Wolf(R) brings over 25 years of pistol customization to the GLOCK(R) platform with the DUSK barrel. Each DUSK barrel was designed and engineered for absolute accuracy and combat reliability.Features Include: Ready to use, pre-fit Drop in installation Fits Lone Wolf(R) DUSK and most GLOCK(R) 19 slides Coated for corrosion and wear resistance Heat treated, high strength stainless steel construction Exacting tolerances produce greater shot-to-shot accuracy Improved feed ramp design for maximum chamber support Shallow recess crown Designed for lead, plated or jacketed ammunition Hood fluting reduces bearing surface on reciprocating surfaces Threaded 1/2x28 muzzle with thread protector