GP-25

GP-25 grenade launcher
Type	Grenade launcher
Place of origin	Soviet Union
Service history
In service	1978–present
Used by	See Users
Wars	Afghan conflict Soviet–Afghan War War in Afghanistan Transnistria war First Chechen war Second Chechen War Russo-Georgian War Syrian Civil War Russo-Ukrainian War War in Donbas[1] Russian invasion of Ukraine Yemeni Civil War Saudi Arabian-led intervention in Yemen Houthi–Saudi Arabian conflict
Production history
Designer	TsKIB SOO
Designed	1966–1978
Manufacturer	Kalashnikov Concern STC Delta Arsenal AD Zastava Arms
Produced	1978–present
Variants	GP-30, GP-30M, GP-34
Specifications
Mass	1.5 kg (3.31 lb) (GP-25) 1.3 kg (2.9 lb) (GP-30) 1.4 kg (3.1 lb) (GP-34)[2]
Length	323 mm (12.7 in) (GP-25) 275 mm (10.8 in) (GP-30) 315 mm (12.4 in) (GP-34)[2]
Barrel length	120 mm (4.7 in)
Cartridge	40 mm internal propellant caseless ammunition (CL)
Caliber	40 mm
Action	Closed system, single-shot
Rate of fire	20 rounds/min area suppression[2] 5–6 rounds/min aimed shots[2]
Muzzle velocity	76.5 m/s (251 ft/s)[2]
Effective firing range	Sights adjustable 100 to 400 meters[2]
Feed system	Muzzleloader
Sights	Notched quadrant sight

The GP-25 Kostyor ("Bonfire"), GP-30 Obuvka ("Shoe") and GP-34 are a family of Russian 40 mm under-barrel muzzleloaded grenade launchers for the AK family of assault rifles.^[3] The acronym GP stands for Granatomyot Podstvolnyj,^[3] "under-barrel grenade launcher" in Russian, and was adopted by Soviet forces in 1978.