Black Dirt Rifleworks Stainless A2 "Bird Cage" device is manufactured to exactly the same dimensions as the standard issue muzzle device found on most U.S. military issue M4 / M16 rifles and threaded in 1/2 x 28" for AR15 and .22 caliber rifles.
- Stainless A2 "Bird Cage" Style muzzle device for 1/2" X 28 Threaded Barrels.
- 17-4ph® Heat Treated Stainless Steel
- Natural Stainless Finish
- Includes Stainless Crush Washer
- 100% Made in the USA