Our Birdcage Muzzle Brake/Flash Hider with 5 slots and solid bottom is designed in the standard A2 style with 1/2"x28 thread pitch. It's constructed of solid 4150 steel and has a high quality Black Phosphate finish. Fitted steel crush-washer not included.
Features:
- Solid 4150 steel construction
- Parkerized finish
- Birdcage with 5 slots & solid bottom
- 1/2"x28 thread pitch
- Fits: AR-15