M224
TypeMortar
Place of originUnited States
Service history
In service1978–present[1]
Used byUnited States
Iraq[2]
Ukraine
WarsVietnam War (prototype model)
Gulf War
War in Afghanistan
Iraq War
War in Iraq
Russo-Ukrainian War
Production history
Unit cost$10,658
VariantsM224
M224A1
Specifications
Mass21.1 kilograms (47 lb)
Barrel length1 meter (3.3 feet)
Crew3
Caliber60 mm (2.4 in)
Rate of fireup to 20 rpm sustained, 30 rpm in exceptional circumstances and for short periods
Effective firing rangeHE: 70–3,490 m
(76–3,816 yds)
Feed systemmanual

The M224 60 mm Lightweight Company Mortar System (LWCMS) is a smooth bore, muzzle-loading, high-angle-of-fire mortar used for close-in support of ground troops. It was deployed extensively in the War in Afghanistan by the United States military.

Description

The M224 system is composed of these parts:

  • M225 Cannon: 14.4 lb (6.5 kg)
  • M170 Bipod: 15.2 lb (6.9 kg)
  • M7A1 Baseplate for use in conventional mode: 9.6 lb (4.4 kg) or
    • M8 baseplate for use in handheld mode: 3.6 lb (1.6 kg)
  • M64A1 Sight Unit (The M67 Sight Unit is now widely used for the system): 2.5 lb (1.1 kg)

The mount consists of a bipod and a base plate, which is provided with screw type elevating and traversing mechanisms to elevate/traverse the mortar. The M64A1 sight unit is attached to the bipod mount. The mortar can be fired in the conventional mode or the handheld mode. This smooth-bore system can be gravity-fired or fired by using a manual spring-loaded trigger.

It is typically fielded at the infantry company level. A small mortar section with two mortars was organic to Army rifle companies (light, airborne, air assault) and Ranger companies. Marine rifle companies have a section with three 60mm mortars in the company weapons platoon.

History

The M224 LWCMS (Lightweight Company Mortar System) replaced the older (WWII-era) 60 mm M2 mortar and the inaccurate M19 Mortar and began fielding as prototypes in the mid-1970s during the Vietnam War. The M2s and M19s had an effective range of only 2,000 m (2,187 yd). While the M224s were designed to fire all types of the older ammunition, their primary rounds are of the newer, longer-range type that range out to 3,489 m (3,816 yd).

In 2011, an improved M224A1 version was brought into service.[3] The M224A1 consists of the M225A1 tube, M170A1 bipod assembly, M7A1 baseplate, M8 auxiliary baseplate and the M64A1 sight unit.[3] By reducing the number of components and using lighter materials, the M224A1 mortar system weighs at about 37.5 lbs (17 kg) which is 20% less with a reduction of 9.3 lb (4 kg) compared to the original M224.[3] The US Army plans to replace all legacy M224s with the new M224A1.[3] Concurrently, a lighter version of the 81mm M252 mortar was also developed.

Ammunition

The M224 Mortar can fire the following principal classifications of training and service ammunition:

  • High explosive (HE): Designations M888, M720, and M720A1. Used against personnel and light material targets.
  • Smoke Cartridge (WP): Designation M722. Used as a screening, signaling, or marking munition.[5]
  • Illumination (ILLUM): Used in night missions requiring illumination for assistance in observation.
  • Training practice (TP): Designation M50A2/A3. Used for training in limited areas. These rounds are obsolete and no longer used.
  • Red Phosphorus: Can not be fired by the 60mm mortar
  • Full Range Practice Cartridges (FRPC): Designation M769. This round is used for practice or clearing misfires.
  • M1061 MAPAM: SAAB Technologies produced Multi-Purpose Anti-Personnel Anti-Material round.

Fuzes

The M224 rounds have three fuze types: The Multioption Fuze (M734), the Point-Detonating Fuze (M525), and Timer fuze. The M734 is used for the M720 HE round and can be set to function as proximity burst, near-surface burst, impact burst, or delay burst.

See also

References

  1. ↑ "U.S. Army Fact Files". Archived from the original on 13 September 2007. Retrieved 8 September 2007.
  2. ↑ Iraq: Turning a blind eye: The arming of the Popular Mobilization Units (PDF) (Report). Amnesty International. 5 January 2017. p. 26. MDE 14/5386/2017. Archived (PDF) from the original on 13 March 2017. Retrieved 26 October 2018.
  3. 1 2 3 4 Calloway, Audra (20 July 2011). "Soldiers benefit from lighter, easier to maintain mortar systems". U.S. Army (Press release). Army Materiel Command. Retrieved 13 December 2020.
  4. ↑ Orbital ATK's M1061 mortar cartridge receives full material release Archived 29 October 2016 at the Wayback Machine - Armyrecognition.com, 27 October 2016
  5. ↑ "M722 60mm Smoke Cartridge". Archived from the original on 7 September 2009. Retrieved 3 January 2010.
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