Infantry weapons / Grenade launchers / GP-25

GP-25

General Facts

  • TYPE
    Under barrel grenade launcher

  • ORIGIN
    USSR

  • NICKNAMES
    Mukha, fly (nickname for BG-15)
    Kastyor, bonfire (nickname for GP-25)
    Obuvka, shoe (nickname for GP-30)
    6G15 (GRAU index for GP-25)
    6G21 (GRAU index for GP-30)
    6G34 (GRAU index for GP-34)
    UBGL-1 (Bulgarian production)
    BGP 40 (Serbian production)
    ET-97/2 (Ethiopian production)

  • DESIGNED
    1972 - 1977 (BG-15, GP-25)
    2000's (GP-34)

  • DESIGNER
    Valery Telesh for TsKIB SOO (GP-25)
    Izhmash (GP-34)

  • PRODUCTION
    1978 - 1989 (GP-25)
    1989 - present (GP-30)

  • PRODUCERS
    Russia - Izhmash
    Russia - Tula Ordnance Plant
    Russia - KBP Tula
    USSR - KBP Tula

    Licensed production:
    Buglaria - Arsenal
    Ethiopia - Gafat Armament Engineering Complex
    Pakistan - Pakistan Machine Tool Factory
    Serbia - Zastava

  • QUANTITY
    Unknown

  • UNIT COST
    Unknown

  • CHARACTERISTICS
    Simple design
    Robust and reliable
    Good rate of fire
    Complex sight unit on GP-25

Introduction

The GP-25 is a late Cold War era under barrel grenade launcher of Soviet origin. It was developed to provide Soviet forces with a similar capability as the US had with the M203 grenade launcher. The GP-25 attaches to the AKM and AK-74 assault rifles. Although of a very different design it provides a similar performance as Western 40mm grenade launchers.

Design

The GP-25 is a muzzle loaded single shot grenade launcher. The design is relatively simple and attaches to most rifles of the Kalashnikov pattern. As it is mostly made out of metal the GP-25 is very robust. The 40mm VOG-25 grenades are muzzle loaded into the rifled barrel. A metal sight unit is mounted at the side. Upon pulling the double action trigger situated behind the barrel the grenade is launched. A rubber buttpad is provided for mounting on the shoulder stock of the rifle to reduce the recoil impact on the shoulder.

Firepower

The GP-25 launches the VOG-25 family of spin-stabilized 40mm grenades. Direct fire is possible up to 100 meters. The maximum effective range is 400 meters. Accuracy at 400 meters is 3 m in azimuth and 6 m in range. An experienced operator can accurately fire 4 to 5 rounds per minute.

Users

Although the GP-25 attaches to most Kalashnikov type rifles it has only been adopted by relatively few nations. The main user of the GP-25 was the USSR and is now Russia. The GP-25 is common among Eastern European and former Soviet states, but is hardly used in other parts of the world.

Variants

GP-25

GP-25: The GP-25, also nicknamed Kastyor, is an under barrel grenade launcher of Soviet origin. It easily attached to the AKM and AK-74 assault rifles. The GP-25 was the first grenade launcher of its kind to be accepted for Soviet service.
BG-15: The GP-25 is based on the BG-15 Mukha developmental grenade launcher. On the GP-25 the mechanical sight unit is situated on the left.

TypeGrenade launcher
Caliber40mm Soviet
MagazineSingle shot
OperationMuzzle loaded, double action trigger
Fire selector0-1
Rate of fireSingle shot
Barrel length120 mm
Rifling12 grooves
Muzzle velocity76 m/s
Stock-
Length323 mm
Width?
Height?
Weight1.5 kg empty
SightsIron sights, mechanical
Remarks-

GP-30

GP-30: The GP-30, also nicknamed Obuvka, is an improved version of the GP-25. It is primarily intended for used on the AK-74M and AK-100 series, but can be attached to older models as well. The GP-30 is lighter, smaller, easier to produce and easier to handle due to its simpler sight unit. Instead of a mechanical sight unit on the left a simpler quadrant sight has been fitted on the right.
GP-30M: The latest production version of the GP-30 is called GP-30M and has a leaf sight on the right instead of a quadrant sight.
GP-34: Model developed by Izhmash as competitor to the GP-30M.

TypeGrenade launcher
Caliber40mm Soviet
MagazineSingle shot
OperationMuzzle loaded, double action trigger
Fire selector0-1
Rate of fireSingle shot
Barrel length?
Rifling12 grooves
Muzzle velocity76 m/s
Stock-
Length276 mm
Width70 mm
Height195 mm with sight
Weight1.3 kg empty
SightsIron sights, leaf
Remarks-

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