Heckler & Koch GMG

The GMG (Granatmaschinengewehr or "grenade machine gun") is an automatic grenade launcher developed by Heckler & Koch for the German Army. It is also often referred to as GMW or GraMaWa (Granatmaschinenwaffe).

Design details
The GMG fires 40 mm grenades at a rate of about 340 rounds per minute. It is belt-fed, and can be loaded from either side, making it easy to mount on most platforms. With a variety of day and night sights available, the GMG can be used for most medium range infantry support situations.

The weapon is 1.09 m long and has a 415 mm rifled barrel; the ammunition box has dimensions of 470 × 160 × 250 mm. The gun cycles on a recoil-operated blow-back basis. It weighs 29 kg; the tripod is an additional 11 kg.

Testing and operation
The HK GMG was tested in the Yuma desert in Arizona in 1997 in order to compete for future United States contracts.

Users



 * 🇧🇪 Belgium: Mounted on the army's Jankel FOX Rapid Reaction Vehicles
 * 🇨🇦 Canada: 304 ordered. Designated as the C16 Close Area Suppression Weapon (CASW) and licence-built by Rheinmetall Defence Canada.
 * 🇫🇮 Finland Locally known as 40 KRKK 2005
 * 🇩🇪 Germany
 * 🇬🇷 Greece
 * 🇮🇪 Ireland: Irish Army
 * 🇱🇻 Latvia
 * 🇱🇹 Lithuania: Lithuanian Armed Forces.
 * 🇲🇾 Malaysia: Used by Pasukan Khas Laut (PASKAL) of the Royal Malaysian Navy.
 * 🇳🇱 Netherlands
 * 🇳🇿 New Zealand
 * 🇳🇴 Norway
 * 🇵🇱 Poland: Wojska Specjalne.
 * 🇵🇹 Portugal: Used by Portuguese Army, Portuguese Marine Corps and National Republican Guard.
 * 🇸🇮 Slovenia
 * 🇱🇰 Sri Lanka: Used by Sri Lanka Armoured Corps on its Main Battle Tanks & Used by Sri Lanka Navy on its Fast Attack Crafts.
 * 🇺🇦: 100 donated by Germany in response to the Russian invasion of Ukraine as of July 2024.
 * 🇬🇧 United Kingdom: 44 purchased in 2006 for use in Afghanistan and Iraq. Designated as L134A1.
 * 🇺🇸 United States: Used by USSOCOM.