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The [[GP-25]] is a [[grenade launcher]] made by the Soviet Union. If it was ever used in Vietnam, prototypes were used.
=HISTORY=
The development of a [[grenade launcher]] for the [[AKM]] [[assault rifle]] began in 1966 at the Central Design and Research Bureau of Sporting and Hunting Arms (TsKIB SOO). Development continued into the 1970s, and in 1978 it was accepted into service. The main production version was the GP-25. The GP-30 was made lighter and the aiming system was redesigned and moved to the right.


GP grenade launchers are similar in appearance and fire the same Russian 40mm caliber ammunition. At the top of the barrel is the mounting hardware to attach the weapon to the underside of a rifle barrel, from which it is designed to fire. The GP barrel has a useful life of about 400 rounds.
'''GP-25''' is a Soviet 40mm underbarrel [[grenade launcher]] designed to mount to AK-pattern rifles such as the [[AKM]]. It is a muzzle-loading launcher that fires VOG-series 40mm grenades and uses a simple ladder-style sighting system. It is best known for being the standard Soviet/Russian underbarrel grenade launcher family in 40mm “caseless” ammunition, distinct from Western 40×46mm systems. In ''Military Conflict: Vietnam'', the GP-25 appears as a Zombie mode exclusive weapon.


GP grenade launchers fire multiple 40mm VOG-25 high-explosive fragmentation grenades, with a total range of 400 meters and an effective range of 150m. These Russian-Soviet 40mm grenades are not compatible with Western 40x46mm grenades. Originally, the main grenade was the VOG-15 (7P17) fragmentation grenade, which has a lethal radius of six meters. Ammunition for the muzzle-loading GP-25 consists of a single piece containing propellant and charge, as opposed to the more traditional two-piece case and projectile design of comparable US 40x46mm ammunition used in breech-loading grenade launchers, such as the [[M203]]. This integral "caseless" design - with the propellant and primer contained in the base of the grenade - provides for when the grenade is fired nothing is left in the barrel, so the operator can load the next grenade.
==HISTORY==
<br>[https://en.wikipedia.org/wiki/GP-25 SOURCE]
Development of a rifle-mounted grenade launcher for the AK platform began in 1966 at TsKIB SOO and continued through the 1970s, culminating in the GP-25’s acceptance into Soviet service in 1978. The GP-25 became the main production model, with later refinements leading to the GP-30, which reduced weight and revised the aiming system. The launcher mounts under the rifle’s barrel via dedicated hardware and is intended to provide organic explosive capability to infantry at short-to-mid ranges.
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The GP-25 fires Soviet 40mm VOG-25 high-explosive fragmentation grenades (and related types) with a maximum range around 400 meters and a typical effective employment range around 150 meters. Its ammunition differs from Western 40×46mm grenades used in breech-loading systems like the [[M203]]: VOG-type rounds incorporate their propellant/primer in the base of the grenade so nothing is extracted after firing, allowing rapid reloading from the muzzle. The GP-25’s barrel life is commonly cited at roughly a few hundred rounds in service documentation and reference works.


<gallery mode="packed" heights="400px">
===Sources===
File:Georgian under barrel grenade launchers stc delta (3).JPG
* [https://roe.ru/eng/catalog/land-forces/grenade-launchers/gp-25/ GP-25 Grenade Launcher | Rostec / JSC Rosoboronexport]
File:S-l1600.jpg
* [https://www.kbptula.ru/en/productions/grenade-launchers/gp-25 GP-25 | KBP Instrument Design Bureau (Tula)]
File:1599px-VOG-25 7P17 - MAKS2015part7-50.jpg
* [https://www.armyrecognition.com/russia_russian_army_light_grenade_launcher_systems_vehicles/gp-25_kostyor_40mm_underbarrel_grenade_launcher_technical_data_sheet_specifications.html GP-25 40mm Underbarrel Grenade Launcher | Army Recognition (technical overview)]
File:Як артисти театру ім. Франка служили у Нацгвардії та каталися на танках 6933 (26939058010).jpg
* [https://www.forgottenweapons.com/ak-accessories/the-gp-25-underbarrel-grenade-launcher/ The GP-25 Underbarrel Grenade Launcher | Forgotten Weapons]
</gallery>
 


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File:Georgian under barrel grenade launchers stc delta (3).JPG|GP-25-style underbarrel grenade launcher mounted to an AK-pattern rifle.
File:S-l1600.jpg|GP-25 underbarrel grenade launcher.
File:1599px-VOG-25 7P17 - MAKS2015part7-50.jpg|VOG-25 (7P17) 40mm grenade.
File:Як артисти театру ім. Франка служили у Нацгвардії та каталися на танках 6933 (26939058010).jpg|AK-pattern rifle with GP-series underbarrel grenade launcher.
    </gallery>
  </div>
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Revision as of 23:14, 24 February 2026

Factions Weapon Icon Classes Ammo Explosion
Damage Radius

VC
GP-25		 Zombies 1 / 2 125 200
Designation Weapon Type Fire Modes Fire Rate Bullet Spread ° Range Modifier Muzzle Velocity Projectile weight Weight Reload Speed
GP-25 Grenade Launcher Single Shot 25 RPM 6° & 1.5° ADS Unaffected 76 m/s 250 g (0.55 lb) 4.6 kg (10.1 lbs) 2 Seconds
Full name Caliber Place of Origin Date Manufacturer Barrel Length Total Length Weapon Script Name
Granatomyot Podstvolnyj GP-25 Kostyor 40 mm grenade Soviet Union 1966-1978 Kalashnikov Concern
STC Delta
Arsenal AD
Zastava Arms		 4.7 in (120 mm) 12.7 in (323 mm) weapon_gp25


GP-25 is a Soviet 40mm underbarrel grenade launcher designed to mount to AK-pattern rifles such as the AKM. It is a muzzle-loading launcher that fires VOG-series 40mm grenades and uses a simple ladder-style sighting system. It is best known for being the standard Soviet/Russian underbarrel grenade launcher family in 40mm “caseless” ammunition, distinct from Western 40×46mm systems. In Military Conflict: Vietnam, the GP-25 appears as a Zombie mode exclusive weapon.

HISTORY

Development of a rifle-mounted grenade launcher for the AK platform began in 1966 at TsKIB SOO and continued through the 1970s, culminating in the GP-25’s acceptance into Soviet service in 1978. The GP-25 became the main production model, with later refinements leading to the GP-30, which reduced weight and revised the aiming system. The launcher mounts under the rifle’s barrel via dedicated hardware and is intended to provide organic explosive capability to infantry at short-to-mid ranges.

The GP-25 fires Soviet 40mm VOG-25 high-explosive fragmentation grenades (and related types) with a maximum range around 400 meters and a typical effective employment range around 150 meters. Its ammunition differs from Western 40×46mm grenades used in breech-loading systems like the M203: VOG-type rounds incorporate their propellant/primer in the base of the grenade so nothing is extracted after firing, allowing rapid reloading from the muzzle. The GP-25’s barrel life is commonly cited at roughly a few hundred rounds in service documentation and reference works.

Sources

Real-Life Photos
  • GP-25-style underbarrel grenade launcher mounted to an AK-pattern rifle.
    GP-25-style underbarrel grenade launcher mounted to an AK-pattern rifle.
  • GP-25 underbarrel grenade launcher.
    GP-25 underbarrel grenade launcher.
  • VOG-25 (7P17) 40mm grenade.
    VOG-25 (7P17) 40mm grenade.
  • Error creating thumbnail: File missing
    AK-pattern rifle with GP-series underbarrel grenade launcher.
Videos
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