The Gryazev-Shipunov GSh-23 (Russian: Грязев и Шипунов ГШ-23) is a twin-barreled 23 mm autocannon developed in the Soviet Union, primarily for military aircraft use.


The cannon comes in a basic GSh-23 variant, and the more popular GSh-23L (ГШ-23Л), differing mostly in adding a muzzle brake, lowering recoil force. This cannon was standard fit on late-model MiG-21 fighters (M, SM, MF, SMT, PFM, bis), all variants of the MiG-23, the SOKO J-22 Orao, the JF-17 Thunder, the HAL Tejas, the Aero L-39ZA Albatros and IAR 93, and the tail turrets of the Tupolev Tu-22M bomber and some late-model Tu-95MS and Tu-142M3. In the latter application, it had the unusual ability to fire infrared flares and chaff rounds, allowing it to function as both a weapon and a dispenser of anti-missile countermeasures. It is also mounted on late small series Mi-24VP helicopters (in the NPPU-23 movable mounting) and Polish W-3WA Sokół helicopter in fixed mounting. The cannon was also used on cargo aircraft; specifically, Russian/Soviet Ilyushin Il-76 aircraft were designed to accommodate twin GSh-23's in a tail turret. An Il-76M with this configuration was displayed at the 2002 Ivanovo airshow.

Some second-generation MiG-21 models could carry the GSh-23L in an under-fuselage gondola designated the GP-9, carrying the cannon and 200 rounds of ammunition; this was replaced by a more streamlined semi-conformal installation in later variants.