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 …

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 37 mm (1.46 in) recoil operated autocannon designed by Browning Arms Company. The weapon, which was …

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. The weapon, which was …

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. The weapon, which was …

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 mm Automatic Gun M4 / M10 is a WW2 American aircraft cannon. The 37 mm Autocannon M10 was a minor improvement of the M4, the largest firearm designed by John …

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 …

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. The weapon, which was …