417s Single Port Compensator - 417s Single Port Comp For GlockA(R) Gen 4, Gry, 9mm

The Agency Arms 417 Compensator is threaded with the standard 1/2x28 thread pitch. It features a single top venting port and it also features a front sight hole. It is designed to utilize the OEM recoil spring assembly and the front sight hole allows you to transfer your existing front sight from your slide to the comp. Compatible with the 17,19 and 34 Includes: Comp 2 Set Screws Mfg: Agency Arms