Shop › DEAD AIR XEMAX BRAKE 5/8X24 .338CAL DEAD AIR XEMAX BRAKE 5/8X24 .338CAL $90.00 Dead Air Armament Xemax, Muzzle Brake, 338 Caliber, 5/8X24, Nitride Finish, Black DA150 Quantity: Add To Cart Added! Dead Air Armament Xemax, Muzzle Brake, 338 Caliber, 5/8X24, Nitride Finish, Black DA150