Shop › DEAD AIR KEYMO ZERO 5/8X24 .45 CAL DEAD AIR KEYMO ZERO 5/8X24 .45 CAL $90.00 Dead Air Armament Key Mount, Zero, 45 Caliber, 5/8x24, Nitride Finish, Black DA321 Quantity: Add To Cart Added! Dead Air Armament Key Mount, Zero, 45 Caliber, 5/8x24, Nitride Finish, Black DA321