The 40mm grenade is the calibre used by the US military for their M79, Colt XM148 and M203 grenade launchers. A version of the round with a different propellant charge and a longer casing was also used in the MK18 hand cranked multiple grenade launcher, which was replaced by the MK19 40mm machine gun currently in use. The MK19 may soon be replaced by the MK 47 MOD 0 'Striker' 40mm Grenade Machine Gun. Caliber: 40 mm grenade Action: Single shot, breech loaded Mass: 3 kg (6. ... The XM148 was an experimental grenade launcher manufactured by Colt Firearms during the Vietnam era. ... Caliber: 40x46 mm grenade Firearm action: Single-shot, Single action Barrel length: 12 in (305 mm) Overall length w/M16: 39 in (990 mm) Effective range: 492 ft (150 m) Maximum range: 1,312 ft (400 m) Rate of fire: 5 to 7 round/min Muzzle velocity: 250 ft/s... A grenade launcher is weapon that fires or launches a grenade to longer distances than a soldier could throw by hand. ... MK-19 40mm grenade launcher during MIL-EX 2003 The MK19 (also known as MK-19, M19, Mark 19, or Mk 19) is a belt-fed grenade machine gun capable of firing five grenades every second. ...

The 40mm grenade comes in many types for different uses, including High Explosive (HE), High Explosive Dual Purpose (HEDP), flare, parachute flare, smoke, teargas, training, armor piercing, flash-bang, buckshot, and crowd control buckshot (rubber projectiles).

Other weapons using this round are the Corner Shot 40™ grenade launcher, the Milkor MGL Mk-1S Multiple Grenade Launcher, the Penn Arms PGL65-40 'Fourkiller Tactical Model' 40mm Multiple Grenade Launcher, the Penn Arms PGL65-40 6-shot pump-action 40mm grenade launcher, the Heckler & Koch AG-C/EGLM Grenade Launcher, and the Heckler & Koch HK69A1 Grenade Launcher. Heckler und Koch GmbH (H&K) is a German weapons manufacturing company famous for various series of small firearms, notably the MP5 submachine gun, the MP7 personal defense weapon and the G3 and G36 assault rifles. ...

The Metal Storm 40mm Weapon System is a 4 barrel, 16 shot weapon system that also uses this type of round, and is designed for mounting on an unmanned ground vehicle. Initial trials are determining suitability for mounting on unmanned aerial vehicles. ##

External links

• 40mm Low-Velocity Grenades
• Defense Review overview of MK47 MOD 0 'Striker' 40mm Grenade Machine Gun
• Defense Review overview of Corner Shot 40™ personal grenade launcher
• Defense Review overview of Milkor MGL Mk-1S Multiple Grenade Launcher
• Defense Review overview of Penn Arms PGL65-40 'Fourkiller Tactical Model' 40mm Multiple Grenade Launcher
• Penn Arms data page for PGL65-40 6-Shot Grenade Launcher
• Heckler & Koch Defense AG-C/EGLM data page
• Heckler & Koch Defense HK69A1 Grenade Launcher data page
• Defense Review overview of Metal Storm 40mm Weapon System