The GP-25 Kostyor ('Bonfire'), GP-30 Obuvka ('Shoe') and GP-34 are Russian under-barrel grenade launchers for the AK-series of assault rifle. They were first seen by the west in 1984 during the Soviet Invasion of Afghanistan. The initial version was designated BG-15 Mukha ('Fly'), and was fitted under the barrel of AK-74 assault rifles. The main production version, the GP-25, has a different sighting system. The GP-30 was lightened and the redesigned sighting system was moved to the right.

The current Izhmash-made version, the GP-34, has an again redesigned sighting system on the right and features the following advantages:

  •     Reliability: It is designed and tested specifically for the Kalashnikov assault rifles, fits such assault rifles directly without any adaptors or forearm dismantling.
  •     Improved safety: The design prevents a round from moving within or falling out of the barrel, even if the muzzle looks down. The GP-34 features an additional mechanism (firing pin safety lever) to improve safety during loading.

Class Manportable
Type Mortars
Manufacturer KBP
Origin Russia (USSR)
Country Name Origin Year
Russia (USSR) 1978
Country Name Operational Year Retirement Year
Bulgaria View
Georgia View
India View
Lithuania View
Moldova View
North Korea View
Russia (USSR) View
Ukraine View
Yugoslavia (Serbia) View
ManufacturerName Production From Production To Quantity
KBP View
Development of a grenade launcher for the AK-47 assault rifle began in 1966 at the Sporting and Hunting Arms Central Design and Research Bureau. Development continued into the 1970s, and in 1978 it was accepted into service. The GP-30 first entered service in 1989, and is intended for use with the AK-100 series of assault rifles.

Weight - 1.5kg (3.31lb) (GP-25)1.3kg (2.9lb) (GP-30)5kg (11lb) (GR-6)

Length - 323mm (12.7in) (GP-25)275mm (10.8in) (GP-30)490mm (19.3in) stock extended / 355mm (14.0in) stock collapsed (GR-6)

Barrel length - 120mm (4.7in)

Cartridge - 40 mm caseless grenade

Action - Break action

Muzzle velocity - 76.5m/s (251ft/s)

Effective range - Sights adjustable up to 400 m

Feed system - Breech-loaded, single-shot

Sights - Notched quadrant sight

End notes