BG-15

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BG-15
Weapon gp25.svg Unused 1 / 2 125 175
Designation Weapon Type Fire Modes Fire Rate Bullet Spread ° Range Modifier Muzzle Velocity Projectile weight Weight
BG-15 Prototype
GP-25 Production
Grenade Launcher Semi 25 RPM 6° & 1.5° ADS Unaffected 76 m/s 250 g (0.55 lb) 4.6 kg (10.1 lbs)
Full name Caliber Place of Origin Date Armory 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


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 initial version was designated the BG-15 Mukha ("Fly"), and was mounted under the barrel of the AK-74 assault rifle. The main production version, the GP-25, has a different aiming system. 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 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.
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