The Nudelman-Rikhter NR-30 was a Soviet cannon widely used in military aircraft of the Soviet Union and Warsaw Pact. It was designed by A.E. Nudelman and A.A. Rikhter , entering service in 1954.

The NR-30 was a single-barrel, gas operated cannon, essentially an enlarged version of the 23mm NR-23 weapon introduced in 1949. It fired a massive projectile (more than twice the weight of the NR-23's 23mm shell), requiring a muzzle brake with an integrated flame damper to prevent airframe damage from its firing.

The NR-30 was used in the MiG-19, some MiG-21 models, the Sukhoi Su-7, and the Sukhoi Su-17. It was also used on the J-6, the Chinese copy of the MiG-19. The Chinese manufacture their own version, the Type-30, which has slightly different characteristics, but is basically similar in operation.

Although its rate of fire makes it more suited for air-to-ground use, it is, by all accounts, a formidable weapon combining reasonable accuracy and devastating hitting power.

This gun may also have been installed on the Almaz series of military space stations.

Specifications

• Type: single-barrel automatic cannon
• Caliber: 30 mm (1.18 in)
• Operation: gas
• Length: N/A
• Weight (complete): 66 kg (145.5 lb)
• Rate of fire: 850-1,000 rpm
• Muzzle velocity: 780 m/s (2,560 ft/s).
• Projectile weight: 410 gram (14.46 oz)