ATI Outdoors Shark Muzzle Brake, 1/2-28 Thread With Crush Washer, Fits AR-15, Black Oxide Finish A.5.10.2251
Specifications:

Type
Model	Shark Muzzle Brake
Dimensions
Size
Material	Steel
Action
Trigger
Safety
Thread Pattern	1/2"-28 tpi
Finish	Oxide
Bolt Type
Hand
Hammer Type
Capacity