The 37 mm Automatic Gun, M4, known as the T9 during development, was a 37 mm (1.46 in) recoil-operated autocannon designed by Browning Arms Company and entered service in …

The 37 mm (1.46 in) M4 Automatic Cannon was a compact, low velocity and rate-of-fire auto-cannon developed by Browning in 1921. Browning and the Colt Firearms Co reworked it into …

The 37 mm Automatic Gun, M4 (known as the T9 during development) was a 37mm recoil-operated autocannon designed by the Browning Arms Company and manufactured by Colt. It …

37 mm on bow of PT-631. Distinctive "arched" magazine was designed to fit into the nose of P-39 aircraft. US Navy Photograph taken in early 1945.

The 37 mm Automatic Gun, M4, known as the T9 during development, was a 37 mm (1.46 in) auto cannon designed by John Browning and used in the Bell P-39 Airacobra and P-63 …

The 37mm autocannon’s compact design made it ideal for mounting on aircraft, including the Bell P-39 Airacobra and on board PT boats. The 37mm cannon that became the M4 was John …

The 37×145mmR was a series of rimmed-case, fixed-ammunition cannon shells for use in the 37mm Browning M4 autocannon. The rapid strides in aircraft protection made it necessary to …

37-mm Gun With Non-Armored Vehicles, Aircraft, and Vessels in World War II covers the M3 and M1A2 Automatic Anti-aircraft Gun mounted in/on the M4 Towed Mount and: PT Boats. …

The 37 mm Automatic Gun, M4, known as the T9 during development, was a 37 mm (1.46 in) recoil-operated autocannon designed by Browning Arms Company and entered service in 1942.

The 37 x 145 mm R was a series of rimmed-case, fixed-ammunition cannon shells for use in the 37mm Browning M4 autocannon. The rapid strides in aircraft protection made it necessary to …