The Wilson Combat Q-Comp Muzzle Brake is for serious shooters who need performance with precision. Fitting 5.56 NATO caliber rifles (and other .22 calibers), this muzzle brake is designed to reduce felt recoil, minimize muzzle jump, and optimize control of your firearm. It's a tough piece of equipment that can stand up to punishing conditions and still come out unscathed. With an 1/2" x 28 thread pitch, you can easily attach it to your rifle and get to shooting quickly. Gain control of your firearm with the Wilson Combat Q-Comp muzzle brake - revolutionize your shooting experience today! Featuring a slotted expansion chamber design, the Q-Comp has no broken prongs or tines and is Melonite QPQ-coated alloy steel for ultimate durability and corrosion protection. With the ease of installation in mind, this product comes complete with its own crush washer to assist you in mounting it onto your AR rifle quickly. The Q-Comp, an exclusive Wilson Combat design, is a hybrid AR-15 brake/compensator with unique tuning to sharply reduce side blasts and concussions compared to other muzzle devices. It produces almost zero muzzle flash while still offering remarkable vertical and rearward recoil reduction for all calibers. Caliber: 5.56 NATO Material: Hardened 4140 steel Thread Pitch: 1/2" x 28 Length: 2.20" Diameter: .875" Weight: 2.9 oz. Finish: Melonite QPQ Bore Diameter: .375"