The Gryazev-Shipunov GSh-30-2 (ГШ-30-2) is a dual-barrel autocannon used on certain Russian military aircraft.
The GSh-30-2 is carried by the Sukhoi Su-25 ground attack plane and in external gun pods. The GSh-30K is a modified version with 2400 mm long water-cooled barrels and variable rate of fire. It is used on a fixed mounting on Mi-24P Hind-F helicopters.