The Rosco Manufacturing's line of Glock barrels are a drop-in, match-grade option that enhances the accuracy and performance of any stock Glock pistol. Compatibility: Glock 17 Gen 1-4 Barrel Length: 5" OAL (Threaded) Barrel Material: 416R Stainless Steel Barrel Caliber: 9x19mm Twist: 1/10 RH Barrel Crown: Recessed with a 50/50 surface split Barrel Finish: Melonite (Electro bore polished) Rifling: Pulled broach Thread Pitch: 1/2 X 28 TPI (Threaded only) Weight: 0.5 lbs Dimensions: 10 x 3 x 2.5 in DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.