Other
Other weapons using 40mm rounds are the Corner Shot 40 grenade launcher, the Defcpm LLC XL201A1 rail mounted launcher (Defcom sales brochure, dated 2010), the Milkor MGL Mk-1S Multiple Grenade Launcher, the Penn Arms PGL65-40 "Fourkiller Tactical Model" 40mm Multiple Grenade Launcher, the Heckler & Koch AG36, Heckler & Koch AG-HK416, the Heckler & Koch GMG grenade autocannon and the Heckler & Koch HK69A1. There is also the CIS 40 AGL and 40LWAGL from Singapore's ST Kinetics.
The Russian GP-30 Obuvka, GP-25 Kastyor, and BG-15 Mukha use a unique type of 40mm grenade. These grenades are caseless, holding their own propellant within the body of the grenade. The Russian 40mm grenades are not interchangeable with U.S. 40×46mm and 40×53mm weapons. They also developed a silenced 30mm grenade launcher, the BS-1 "Tishina", using a multi-round blank cartridge magazine meant to ignite the 30mm HE-DP caseless grenade.
The Metal Storm 40 mm Weapon System is a four-barrel, 16-round weapon system that also uses 40mm grenades (stacked), and is designed for mounting on an unmanned ground vehicle. Initial trials are under way to determine suitability for mounting on unmanned aerial vehicles.
Read more about this topic: 40mm Grenade