Shoot Flat Tame the recoil of your Glock with a frame-mounted Wasatch Arms Compensator.  The unique design and meticulously placed ports allow the gas to disperse more efficiently which helps stabilize your gun and significantly increase control. Install It Yourself Quickly and easily add or remove the comp in minutes by sliding it onto the picatinny rail and tightening the 4 screws. No need to purchase a threaded barrel or make any permanent modifications to your handgun. Easy on, easy off.  Keep Your Light Maintain the ability to add lights or accessories. The comp includes a standard built-in picatinny mount so you won't lose any valuable real estate on the front of your pistol.  Compatible with: Glock 17 Cerakote Colors: Black Material: 6061 T6 Aluminum Recommended Grain: 115-147 Rated for Standard and +P/+P+ Ammo Factory slide, barrel, and frame required for proper installation Installation Video Results may vary depending on the handler. Wasatch Arms is not in any way responsible for the misuse of firearms or the results of such misuse. We highly recommend gun owners inspect parts and accessories frequently. This will help mitigate the possibility of accidents and malfunctions.