Heckler & Koch M320 GLM (HK AG36) Single-Shot 40mm Grenade Launcher (2010)
The M320 GLM is the US Army's newest single-shot 40mm grenade launcher.
The M320 is a handy, compact system capable of firing various grenade rounds as missions require. The basic design sports a stout frame with integrated shoulder, pistol grip and fold down foregrip. The weapon maintains only one mode of fire beyond the safety feature, this managed by a simple HK-style selector switch found along both sides of the receiver rear. The double-action trigger is solid and embedded ahead of the pistol grip and protected over in a thick ring guard. There is a flip-up sighting device affixed to the upper left side of the receiver, keeping it clear of primary rifle functions and sighting when set under the barrel a primary weapon (an issue found with the M203). The barrel is set within the receiver with its breech opening to the left hand side for reloading. It is tubular in its external design and rifled in its internal design. The M320 can be used as both a stand-alone weapon (as in the Vietnam-era M40 launcher) or as an under-slung, secondary weapon and can accompany a carbine/assault rifle system like the M4 or M16 (as in the M203). When paired with another weapon, the adjustable stock of the M320 can be removed. The system weighs in at just 3.3lbs and sports an overall length of 13.7 inches making it highly portable in any battlefield role. While the M320 is single-shot in its design, a trained grenadier can fire between 5 and 7 rounds per minute, making repeating fire possible for tactical situations. There is some noticeable recoil to contend with when firing the M320 though there is only a light smoke discharge so as not to give away the position of the firer, each projectile following an arced flightpath.
The M320 is cleared to fire several types of US Army and NATO-standard munitions including high-explosive (HE), smoke, illumination, training and "less than lethal" rounds - the latter for riot/crowd control. Acceptable rounds are "40x46mm SR" in caliber. High-explosive grenades can be used to dislodge or kill enemy elements under cover whilst smoke grenades can be used to "blind" the enemy to friendly movements. Illumination rounds can light up a darkened sky for a time, allowing easier recognition of friend and foe in night environments. Maximum range of the M320 system is listed at 400 meters while an effective range of 150 meters is given.
On May 24th, 2010, a Department of Defense order was publicly announced for the procurement of 5,400 M320A1 and 600 M230 grenade launchers. The contracting party was Heckler and Koch Defense, Incorporated of Ashburn, Virginia. The total order value is listed at $13,700,000 USD. Work will be performed in Oberndorf, Germany (50%), Columbus, Georgia, USA (30%) and Ashburn, Virginia, USA (20%). Text ©2003-2013 www.MilitaryFactory.com • All Rights Reserved • No Reproduction Permitted
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Specifications for the
Heckler & Koch M320 GLM (HK AG36)
Single-Shot 40mm Grenade Launcher
Country of Origin: Germany
Manufacturer: Heckler & Koch Defense - USA
Initial Year of Service: 2010
Overall Length: 350mm (13.78in)
Barrel Length: 280.00mm (11.02in)
Weight (Empty): 3.31lbs (1.50kg)
Cartridge: 40x46mm SR
Action: Double-Action; Single-Shot
Feed: Single-Shot
Muzzle Velocity: 249ft/sec (76m/sec)
Rate-of-Fire: 6 rounds per minute
Range: 492ft (150m; 164yds)
Sights: Night Sight Scope
Variants:
AG36 - Original HK German designation
M320 - Base Production Series Designation
M320A1
Operators: United States
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