The Spitfire Gun Sound is the sound of M1919 variant – Browning .303 Mark II Four-Gun Firing from the WW2 Weapon SFX sound library. Even after the introduction of autocannon as primary fighter armament .303s were retained as supplementary weapons on many aircraft. Such as later versions of the Supermarine Spitfire and Hawker Hurricane. As well as fighter-bomber and night fighter versions of the de Havilland Mosquito, among others. Supermarine Spitfire had four guns with 350 rounds per gun.

The Spitfire gun sound consists of the looped audio file 12 seconds long and the ending file, which should be played at the end of the shooting. The WW2 Weapons SFX Library library includes 28 audio files.