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Mk 19 grenade launcher

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Mk 19
A Mk 19 40 mm grenade launcher mounted on an M3 tripod
TypeAutomatic grenade launcher
Place of originUnited States
Service history
In service1968–present
Used bySee Users
Wars
Production history
DesignerNaval Ordnance Station Louisville, George M. Chinn
Designed1966
ManufacturerSaco Defense Industries (now a division of General Dynamics Ordnance and Tactical Systems), Combined Service Forces, MKEK[5]
Unit cost$20,000[6]
Produced1968–present
VariantsMk 19 Mod 0, Mk 19 Mod 1, Mk 19 Mod 2, Mk 19 Mod 3, Mk 19 Mod 4
Specifications
Mass77.6 pounds (35.2 kg) (empty, without accessories)
Length43.1 inches (1,090 mm)
Barrel length16.25 inches (413 mm)
Width9.46 inches (240.4 mm)
Height7.8 inches (199 mm)
Cartridge40×53 mm
ActionAPI blowback
Rate of fire
  • 325-375rpm (cyclic)
  • 40 rpm (sustained)
  • 60 rpm (rapid)
Muzzle velocity750–790 feet per second (230–240 m/s) (average)
Effective firing range1,500 m (1,600 yd)
Maximum firing range2,212 m (2,419 yd)
Feed system32- or 48-grenade belt
SightsIron

The Mk 19 grenade launcher (pronounced Mark 19) is an American 40 mm belt-fed automatic grenade launcher that was first developed during the Vietnam War.[7][8]

Overview

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A U.S. Marine fires a Mk 19 40 mm grenade launcher in Quantico, Virginia in September 2000.

The Mk 19 is a belt-fed, blowback-operated, air-cooled, crew-served, fully-automatic weapon that is designed not to cook off. It fires 40 mm grenades at a cyclic rate of 325 to 375 rounds per minute, giving a practical rate of fire of 60 rounds per minute (rapid) and 40 rounds per minute (sustained). The weapon operates on the blowback principle, which uses the chamber pressure from each fired round to load and re-cock the weapon. The Mk 19 can launch its grenade at a maximum distance of 2,212 meters (2,419 yd), though its effective range to a point target is about 1,500 meters (1,600 yd), since the large rear leaf sight is only graduated as far. The nearest safe distance to launch the grenade is 310 meters in training and 75 meters in combat. Though the Mk 19 has a flash suppressor, it serves only to save the eyesight of its operator, not concealing the weapon's position. For night operation, a picatinny rail quadrant sight can be added for thermal and night vision optics.

The Mk 19A is a man-portable crew-served weapon that can fire from a tripod-mounted position or from a vehicle mount, with the latter being the preferred method, as the weapon alone weighs 77.6 pounds (35.2 kg). The primary ammunition for it is the high-explosive dual-purpose M430 grenade. On impact, the grenade can kill anyone within a radius of five metres (16 ft), and wound them within a radius of 15 metres (49 ft). It can also penetrate two inches (5.1 cm) of rolled homogeneous armor with a direct hit (0-degree obliquity), which means it can penetrate most infantry fighting vehicles and armored personnel carriers. It is especially effective when used against enemy infantry formations. The ammunition comes in cans that hold a 32- or 48-grenade belt weighing 42 and 60 pounds (19 and 27 kg), respectively. Due to its low recoil and comparatively light weight, it has been adapted for use on many different platforms, including small attack boats, fast attack vehicles such as the Humvee (HMMWV), AAV and Stryker, military jeeps, and a large variety of naval mounts.

The Mk 19 automatic grenade launcher replaced the earlier Mk 18 hand-cranked multiple grenade launcher. The 40 mm ammunition used (40×53 mm) is not interchangeable with that used in the M203 (40×46 mm). The M203 ammunition develops a lower chamber pressure, and resultant lower muzzle velocity and range, compared to ammunition loaded for the Mk 19. The Mk 19 fires from an open bolt. The rounds are mechanically fed onto the bolt face with the pull of the charging handles. When the trigger is pressed, the bolt closes, and the firing pin is released. The recoil blows back the bolt, feeds a new round onto the bolt face, which pushes the expended casing off the bolt face.

Production of the Mk 19 is managed by Saco Defense Industries (now a division of General Dynamics Ordnance and Tactical Systems).

In November 2014, General Dynamics entered into an agreement with Advanced Material Engineering Pte Ltd, a subsidiary of Singapore Technologies Kinetics, to manufacture 40 mm high-velocity airburst ammunition for the U.S. military. The 40 mm airburst grenade uses a programmable, time-based fuse that computes and programs the detonation time into it, which counts down once fired to zero to detonate at the intended target point. The airburst ammunition is compatible with the Mk 19, which would give it greater effectiveness and lethality, particularly against concealed and defilade targets.

The Mk 19 is used as part of the Şahin counter unmanned air system (C-UAS) developed by Aselsan, which entered service with the Turkish Armed Forces in July 2022 and uses Atom 40 mm ammunition to detect and destroy mini and micro UAVs out to 700 meters.[9][10]

Variants

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US Navy crewman fires a Mk 19 Mod 0 in July 1969

"Although the MK 19 is a recent entry into the Army’s inventory, development began in 1963. The first version was a hand-cranked, multiple grenade launcher called the MK 18. In 1966 the need for more firepower inspired the development of a self-powered 40-mm machine gun called the MK 19, MOD 0. This model was neither reliable nor safe enough for use as a military weapon system. Product improvements begun in 1971 resulted in the 1972 MOD 1, of which only six were produced. The MOD 1 performed effectively in Navy riverine patrol craft and broader applications for the MK 19 were found. In 1973 the Navy developed the MOD 2, which featured improved reliability, safety, and maintainability. In 1976 a complete redesign resulted in the MK 19, MOD 3, which the Army adopted in 1983. The Army now uses the MK 19 within the tactical environment for defense, retrograde, patrolling, rear area security, urban operations, and special operations."[11] - Department of the Army. November 2003 -

Users

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Map with Mk 19 grenade launcher users in blue

GDOTS has built nearly 35,000 Mk 19 Mod 3 systems for roughly 30 customers since 1984.[12] Users of the Mk 19 include:

  • U.S. Navy sailors fire a Mk 19 40 mm grenade launcher during a training exercise in March 2003.
    U.S. Navy sailors fire a Mk 19 40 mm grenade launcher during a training exercise in March 2003.
  • Mk 19 in use by Polish Land Forces
    Mk 19 in use by Polish Land Forces
  • A Mexican Army Chevrolet Silverado equipped with a Mk 19 at a military checkpoint in March 2009
    A Mexican Army Chevrolet Silverado equipped with a Mk 19 at a military checkpoint in March 2009

See also

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Weapons of comparable role, performance and era

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References

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  8. ^ Tucker, Spencer C. (20 May 2011). The Encyclopedia of the Vietnam War: A Political, Social, and Military History [4 volumes]: A Political, Social, and Military History. ABC-CLIO. p. 431. ISBN 978-1-85109-961-0. Archived from the original on 17 May 2016. Retrieved 3 November 2016.
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