Similar to B-20_(機関砲)

Berezin B-20

ShVAK cannon

Type 97 automatic cannon

Type 98 20 mm AA machine cannon

Type 99 cannon

Gryazev-Shipunov GSh-6-23

Gryazev-Shipunov GSh-6-30

Gryazev-Shipunov GSh-23

Gryazev-Shipunov GSh-30-1

Gryazev-Shipunov GSh-30-2

Nudelman N-37

Nudelman-Rikhter NR-23

Nudelman-Suranov NS-23

Nudelman-Suranov NS-37

Nudelman-Suranov NS-45

ShKAS machine gun

Volkov-Yartsev VYa-23

YakB-12.7 machine gun

Asterisk