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. 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. It was designed primarily for police use and can use a wide range non-lethal ammunition (e.g., tear gas, stun grenades, etc.). It can also use standard 40mm VOG-25 and VOG-25P fragmentation grenades. Users : Russian Interior Ministry See also RGS-50M: 50mm grenade launcher GM-94 RGSh-30 DP-64 BS-1 Tishina RG-6 grenade launcher M79 Grenade Launcher China Lake Grenade Launcher HK 69 Grenade Launcher HK M320 EAGLE grenade launcher B&T GL-06 Grenade Launcher Pallad grenade launcher Fort-600 Grenade Launcher References Grenade launchers of Russia Riot guns Teargas grenade guns Riot control weapons Caseless firearms Military equipment introduced in the 1990s