The DD WAVE Muzzle Brake is designed to securely mount the DD WAVE suppressor to the host firearm. Manufactured from aerospace 17-4 PH stainless steel and salt bath nitride finished for minimal corrosion. Heavy acme threads serve to disrupt carbon build-up as the suppressor is detached, allowing for easy removal even after extended use. Features: Thread: A 1/2 x 28 TPI Length: 2.23" Weight: 3.84 oz Caliber: 5.56mm NATO