Shop › DEAD AIR MOJAVE PISTON 1/2X28 9MM DEAD AIR MOJAVE PISTON 1/2X28 9MM $89.00 Dead Air Armament Piston, 9MM, 1/2X28, Fits Dead Air Mojave, Black PB440 Quantity: Add To Cart Added! Dead Air Armament Piston, 9MM, 1/2X28, Fits Dead Air Mojave, Black PB440