Lone Wolf replacement barrels are manufactured from the highest grade mill select 416 stainless steel, CNC machined, and heat treated. These combined features provide a lifetime of service at an affordable price. The standard groove and land rifling make this an excellent choice for those who wish to shoot lead, plated or jacketed bullets. Can be used in factory ported or stock pistols. Intended for use in the Glock 19 pistol only. FEATURES Ready to use, pre-fit drop in. No gunsmithing required, Fits all Glock generations Precision machined from heat treated 416 stainless steel Lock-up area produces greater shot-to-shot accuracy Tighter dimensions Mfg: Lone Wolf Dist.