The VYa-23 is a Soviet 23mm autocannon used during World War II, and a predecessor of the contemporary ZU-23 rapid fire autocannons. It was most famously used in the IL-2 attacker.

Volkov-Yartsev VYa-23
Autocannon
The VYa-23 is a Soviet 23mm autocannon used during World War II, and a predecessor of the contemporary ZU-23 rapid fire autocannons. It was most famously used in the IL-2 attacker.