Жаңа M320 гранататар құралы және оның қолданылуы

M320 Grenade Launcher Module (GLM) is the U. S. military's designation for a new single shot 40 mm grenade launcher system to replace the M203 for the U. S. Army, while other services initially kept using the older M203. The M320 uses the same High Low Propulsion System as the M203.

In 2004, the Army announced a requirement for a commercial off the shelf 40 mm grenade launcher. It had to be more reliable, ergonomic, accurate, and safer than the M203. It had to be able to fire all 40 mm low velocity grenades but be loaded from the breech to accept future longer projectiles. Heckler & Koch's submission was selected in May 2005. After the U. S. Army at Picatinny Arsenal conducted a competitive bidding process for a new 40 mm grenade launching system, Heckler & Koch was awarded a contract to provide the XM320 beginning in 2006. The M320 was developed from but is not identical to the Heckler & Koch AG36 (a key distinguishing feature being the addition of a folding foregrip ahead of the trigger for use when the weapon is in stand alone configuration, a feature the AG36 lacks). The M320 entered production in November 2008. Fielding of the M320 was planned to begin in February 2009, with 71,600 GLMs planned to phase out the M203 by 2015. In June 2017, Bravo Company, 2nd Combat Engineer Battalion became the first U. S. Marine Corps unit to be issued the M320. Following initial experiments, the Marines expect to issue 7,000 launchers between 2019 and 2022.

The M320 has three major parts: a grenade launcher with rifled barrel, Day/Night Sight (DNS) produced by Insight Technology, Inc and a hand held Laser Range Finder (LRF). Some of the benefits are:
The M320 can be used in two ways. It can be attached to the M16 assault rifle, CAR 15 carbine, M4 carbine, HK416, or other types of rifles, attaching under the barrel forward of the magazine, or it can be used dismounted with a stock attached as a stand alone model. The M320 has the ability to fire detached from a rifle. Soldiers have reported difficulties carrying it unmounted, as its one point sling does not hold it securely. Carrying by the sling would cause it to bounce around and sometimes be dragged through dirt. Soldiers wanted to carry the M320 in a holster to provide protection, rather than just putting it in their rucksack. The Natick Soldier Systems Center began the M320GL Holster Soldier Enhancement Program (SEP) in November 2012. Three commercial vendors produced 167 holsters each. The SEP used the "buy try decide" concept, which allows the Army to test the functionality of equipment without spending much time on research and development. Soldiers from the 75th Ranger Regiment were given a dozen holsters and went through standardized tests in mid May 2013, after which they filled out surveys. The next step was to test them with an entire brigade. As of July 2013, the holsters were being evaluated by soldiers in Afghanistan. Project officials were to make a recommendation to Fort Benning by the beginning of fiscal year 2014.

Kachin Independence Army: Uses the KA 0024, a clone of the M320.