RGM-40 Kastet

The RGM-40 Kastet (English: Brass knuckles) grenade launcher is a stand-alone version of the Russian GP-30 grenade launcher with a telescoping stock, AK-type pistol-grip and flip-up tangent sights.[1] It is a single-shot muzzle loaded weapon with a self-cocking trigger mechanism and offers a high degree of commonality with the GP-30.[1] It was designed primarily for police use and can use a wide range non-lethal ammunition (e.g., tear gas, stun grenades, etc.).[1] It can also use standard 40mm VOG-25 and VOG-25P fragmentation grenades.[1]

RGM-40 Kastet
Type	Grenade launcher
Place of origin	Russia
Service history
In service	1997–present
Used by	Russian Interior Ministry
Production history
Designer	V.N. Teles
Designed	1997
Specifications
Mass	2.5 kg
Length	615 mm (24.2 in) stock extended 368 mm (14.5 in) stock retracted
Barrel length	129 millimetres (5.1 in)
Cartridge	40 mm caseless grenades: VOG-25, VOG-25P, GRD-40 and "Gvozd" (Nail)
Caliber	40mm Grenade
Action	Muzzle loader
Rate of fire	5–6 rpm aimed shots 20 rpm area suppression
Muzzle velocity	76.5 m/s (251 ft/s)
Effective firing range	250 meters
Feed system	Single shot
Sights	Flip-up tangent sights