machine guns), F-86 Sabre, F-84 Thunderjet, and F-80 Shooting Star, and in Vietnam in the XM14/SUU-12/A gun pod. Two are installed in the Embraer EMB 314 Super Tucano aircraft as a fixed wing-mounted standard weapon as designated as M3W with minor modification with reduced weight barrel, electronic box triggered from the cockpit with 250 rounds each. The M3 series is used by the U.S. military in two versions, the M3M and M3P. The fixed, remote-firing version, the FN M3P, is employed on the Avenger Air Defense System and was used on the OH-58D, augmenting the XM296 .50 cal. machine gun. The M3M flexible machine gun has been adopted by USN under the designation GAU-21/A for use on helicopters. The GAU-21/A is also being used by the U.S. Marine Corps to upgrade from the XM-218/GAU-16 .50 cal. machine gun for the CH-53E, on the UH-1Y Venom, and on the Canadian Forces' CH-146 Griffon via the INGRESS upgrade. The Air Force is looking to replace the GAU-18 on the HH-60G Pave Hawk with the GAU-21 because of its higher 1,100 rpm rate of fire, longer 10,000-round barrel life, and lower recoil through the use of a soft mount. The M3M is also the primary machine gun used by the Royal Navy's Fleet Air Arm for helicopter armament on Wildcat and Merlin aircraft. It is also used by the Bundeswehr on their NH-90 helicopters. Users The M2 family has been widely used abroad, primarily in its basic infantry configuration. A brief listing of designations for M2 family weapons follows: Myths regarding M2 Browning use against personnel It is often stated in military circles that the use of the M2 Browning against human targets is prohibited under the Geneva Conventions. This is false; the Geneva Convention, contrary to popular belief, does not regulate the use of any weapon of war. It only regulates the treatment and protection of prisoners of war and non-combatants. There has been controversy surrounding the use of .50 caliber ammunition against enemy personnel, due to the explosive and incendiary Raufoss Mk 211 ammunition. The Saint Petersburg Declaration of 1868 states that the "military or naval" use of explosive or incendiary projectiles with a mass of under 400 grams is forbidden by its signatory parties. This was superseded by the Hague Conventions of 1899 and 1907, which were signed by a far wider circle of nations. The Hague Conventions of 1899