Zaffiri Precision, Blowhole, Compensator, 9MM, Nitride Finish, Black, 1/2x28, For Glock 17/19/34 9mm Gen 1-5 NEW Compatible with all Glock 9mm models (Gen 1-5), except G43 / G43X / G48 - not Sig compatible Designed to have the best fit with Zaffiri Precision slides Thread Fits - 1/2" x 28 Finish: Black Nitride Machined from 17-4 Stainless and Heat Treated Includes: Vibra-tite Red 131 Thread Locker, Set Screws, and Tool Weight: 2.64 oz Product Description Zaffiri Precision Blowhole Compensator is the perfect aftermarket addition for flatter shooting. The solid 17-4 stainless steel comp allows for not only gas redirection but less muzzle climb due to its weight. What does that mean for you?! Faster follow-up shots.