The GSh301 Cockpit Sound is a sound of a 30 mm autocannon firing from russian military aircraft cockpit. This autocannon has been deployed on Su-27, Su-30, Su-33, Su-34, Su-35, Su-37 and Su-57, Mig-29 and others. It entered into service in the early 1980s.

It is a single-barreled, recoil operated autocannon. Unlike many postwar cannons, it uses a short recoil action instead of a revolver cannon or Gatling gun mechanism. The GSh-30-1 has a rate of fire of 1,800 rounds per minute. It customarily limited to 1,500 rounds per minute to reduce barrel wear. Despite that, its barrel life is quite short: 2,000 rounds. When firing a continuous burst of 100–150 rounds, the barrel is put under so much stress that it has to be replaced.

In combination with a laser rangefinding/targeting system, it is extremely accurate. As well as powerful, capable of destroying a target with as few as three to five rounds.

The GSh301 Cockpit sound consists of the firing start sound – [START] file, [LOOP] audio file 10 seconds long and the ending file – [END], which should be played at the end of the shooting. The Aircraft Weapons SFX Library includes 51 audio files.