Master Model Browning M2 aircraft .50 caliber (12.7mm) barrels (2pcs). Used in Curtiss P-40, Republic P-47D Thunderbolt and North-American P-51D Mustang, Grumman F4F-3/F4F-5, F6F Hellcat and the Vought F4U Corsair for the US Navy. Boeing B-17G (designed to be used wit (AM32001) Kitlinx, llc