Applications
The NR-23 was used on fighter aircraft, including the MiG-15, Lavochkin La-15, MiG-17, and some marks of the MiG-19. The AM-23 was used in the defensive turrets of the Antonov An-12, Ilyushin Il-28, Myasishchev M-4, Tupolev Tu-14, Tupolev Tu-16, Tupolev Tu-22, Tupolev Tu-95/Tu-142, and the Tupolev Tu-98 prototype.
In one of the more bizarre applications, published accounts state that a Nudelman-Rikhter gun, either the 23 mm or the 30 mm, was installed on the Almaz military variants of the Salyut space stations.
Considering the various users and the large number of aircraft employing this weapon, it was perhaps the most widely used aircraft cannon of its day. In the mid-1960s the cannon was replaced in Soviet service by the twin-barrel Gryazev-Shipunov GSh-23L.
The mechanism of the NR-23 was scaled up to produce the more powerful NR-30 30 mm gun used in the MiG-19 and some marks of the MiG-21.
Read more about this topic: Nudelman-Rikhter NR-23