Zaffiri Precision Pistol Barrel Fits Glock 17 Gen1-4 Silver 416R Stainless Steel. 17BCPSS Fits Glock 17 Gen1-4 Silver 416R Stainless Steel - This updated release combines the time tested ZPS.1 slide integrated with the Blowhole Compensator allowing you to manage that unruly gas. Adding an angled port and back-bored barrel pushes more gas up and out reducing carbon buildup in the slide. Gain the flat shooting features of the compensated setup without the threaded barrel. Specifications for Zaffiri Precision ZP.17BCPSS Fits Glock 17 Gen1-4 Silver 416R Stainless Steel: Manufacturer: Zaffiri Precision Finish: Stainless Additional Features: 1-10in. Twist Zaffiri Precision ZP.17BCPSS Fits Glock 17 Gen1-4 Silver 416R Stainless Steel