Shop › POF TRIPLE PORT MUZZLE BRAKE 223 POF TRIPLE PORT MUZZLE BRAKE 223 $56.00 Patriot Ordnance Factory Patriot Ordnance Factory, 223 Triple Port Muzzle Brake, 1/2 x 28 RH, Black Finish 308 Quantity: Add To Cart Added! Patriot Ordnance Factory Patriot Ordnance Factory, 223 Triple Port Muzzle Brake, 1/2 x 28 RH, Black Finish 308