The HIPERCOMP 556 Next Gen 2, Muzzle Compensator, 5.56mm, 1/2-28, with crush washer is produced by Hiperfire for AR15 firearm platforms or any firearm chambered in 5.56x45mm with a 1/2" x 28 TPI barrel. The Hipercomp is the same size as a Mil-Spec flash hider and installs easily with an Armorer's wrench. The Hipercomp is compatible with M9/M10 bayonets which gives you more flexibility while customizing your firearm. This compensator comes with a crush washer.