The ZSU-23-4 Shilka Firing Sound is a sound of 4 × 23 mm 2A7 firing autocannons. The Shilka is a lightly armored Soviet self-propelled, radar guided anti-aircraft weapon system (SPAAG). The acronym “ZSU” stands for Zenitnaya Samokhodnaya Ustanovka, meaning “anti-aircraft self-propelled system”. The “23” signifies the bore diameter in millimeters. And the “4” signifies the number of gun barrels.
Afghan soldiers nicknamed it the “sewing machine” due to the sound of firing guns. Its nickname of “Zeus” derived from the Russian acronym.
The development of the ZSU-23-4 “Shilka” began in 1957. And in 1965 the vehicle replaced all ZSU-57-2s in air defense units toward the beginning of the 1970s. A small number of ZSU-23-4 SPAAGs are still in use by the Russian Naval Infantry.
Each water-cooled 23 mm 2A7 autocannon has a cyclic rate of 850–1,000 rounds per minute for a combined rate of fire of 3,400–4,000 rounds per minute. Ammunition capacity is 2,000 rounds.
The ZSU-23-4 Shilka Firing 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.