Gryazev-Shipunov GSh-6-23

[3] The GSh-6-23 differs from most American multi-barreled aircraft cannon in that it is gas-operated, rather than externally powered via an electric, hydraulic, or pneumatic system.

The GSh-6-23 uses the 23×115 Russian AM-23 round, fed via linked cartridge belt or a linkless feed system.

[4] The linkless system, adopted after numerous problems and failures with the belt feed, is limited.

[5][better source needed] Fire control is electrical, using a 27 V DC system.

At present all aircraft in the Russian Aerospace Forces are flying with fully operational guns.

Second from the left GSh-6-23