N-57/OKB-16-57

The N-57 (also called the OKB-16-57) was a 57 mm Soviet autocannon designed shortly after WWII by Alexander Nudelman, and tested on the prototype of the MiG-9 interceptor (known internally as the I-300) . Due to being a prototype weapon of the early Cold War, not much is known about the N-57 and there is much conflicting data on this weapon.^[2]

N-57
Place of origin	USSR
Production history
Designer	Alexander Nudelman
Specifications
Mass	135 kg[1]
Shell	57 x 160 mm[1]
Caliber	57 millimetres (2.2 in)
Barrels	1
Action	Gas-operated
Rate of fire	230 rpm
Muzzle velocity	550 m/s
Feed system	Belt