This is a Daniel Defense Muzzle Brake known as the DDWAVE Muzzle Brake chambered in 556NATO, model 06-049-11048.
The DDWAVE 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 pitch 1/2X28
Made in the USA
