Lone Wolf replacement barrels are manufactured from the highest grade mill select 416 stainless steel. CNC machined and heat treated, providing a life time of service and unparalleled accuracy 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 17 pistol only. Threaded 1/2 x 28 to fit popular suppressor manufacturers. Specifications for Lone Wolf Arms 9mm Threaded Barrel: Manufacturer: Lone Wolf Arms Color: Raw Stainless Finish: SBN Premium Coating Fabric/Material: 416 Stainless Steel Threads per Inch: 1/2x28 Flutes: Yes Caliber: 9mm Luger Barrel Material: 416 Stainless Steel Gun Make: Glock Model Generation: 4, 3, 2, 1 Condition: New Rifling Profile: Button Rifling Features of Lone Wolf Arms 9mm Threaded Barrel: Ready to use, pre-fit drop in. No gunsmithing required Fits Glock generations 1-4 Barrels do not fit Gen 1 "pencil barrel" G17's. Pencil barrels were included in serial numbers AA000-AL999 G17's Precision machined from heat treated 416 stainless steel Lock-up area produces greater shot-to-shot accuracy Tighter dimensions than the original Glass bead, satin finish exterior Maximum chamber support, improved feed ramp design Button rifled, standard crown. Ok to use lead, plated or jacketed bullets Includes thread protector Package Contents: Lone Wolf Arms 9mm Threaded Barrel This product is compatible with the following gun models: Glock 17 9mm, Glock 19 9mm