Herrington Arms Glock 19/17/26 HC9XL 3.0 Pistol Compensator Black HC9XL-BL. 0 compensator has been designed to work well with Glock models 19 17 45 34 and 26 as long as they are gen 4 or 5. It will fit all 1/2-28 barrels. The 3.0 has been carefully...