digplanet beta 1: Athena
Share digplanet:


Applied sciences






















M777 Lightweight Towed Howitzer
M777 Light Towed Howitzer 1.jpg
M777 Light Towed Howitzer in service with the 10th Mountain Division in Support of Operation Enduring Freedom, Logar Province, Charkh District, Afghanistan
Type Howitzer
Place of origin United Kingdom
Service history
In service 2005 – present
Used by United States Marine Corps
United States Army
Saudi Arabian Army
Canadian Army
Australian Army
Weight 3,420 kg (7,540 lb)[1]
Length Combat: 10.7 m (35 ft 1 in)
Travel: 9.5 m (31 ft 2 in)
Barrel length 200 Inches
Crew 7+1

Shell M107, M795, ERFB, M982
Carriage split trail
Elevation 0° to +71.7°[2]
Rate of fire Normal: 2 rpm
Maximum: 5 rpm
Effective firing range M107: 24 km (14.9 mi)
ERFB: 30km (18.6 mi) base bleed
Excalibur: 40km (25 mi)

The M777 howitzer is a towed 155 mm artillery piece, successor to the M198 howitzer in the United States Marine Corps and United States Army. The M777 is also used by the ground forces of Canada and Australia. It made its combat debut in the War in Afghanistan.

The M777 is manufactured by BAE Systems' Global Combat Systems division. Prime contract management is based in Barrow-in-Furness in the UK as well as manufacture and assembly of the titanium structures and associated recoil components. Final integration and testing of the weapon is undertaken at BAE's facility in Hattiesburg, Mississippi.[3]


US Marine gunners test fire an M777 howitzer.

The M777 began as the Ultralight-weight Field Howitzer (UFH), developed by VSEL's armaments division in Barrow-in-Furness, United Kingdom. This company was bought by BAE which ended up responsible for design, construction and assembly (through its US-based, BAE Systems Land and Armaments group). The M777 uses about 70% US-built parts including the gun barrel manufactured at the Watervliet Arsenal.

External images
V-22 with M777
Osprey carries M777 for first time

The M777 is smaller and 42% lighter, at under 4,100 kg (9,000 lb), than the M198 it replaces. Most of the weight reduction is due to the use of titanium. The lighter weight and smaller size allows the M777 to be transported by MV-22 Osprey, CH-47 helicopter or trucks with ease to provide increased mobility and more compact storage over the M198. The minimal gun crew required is five, compared to a previous nine.[4]

The M777 uses a digital fire-control system similar to that found on self-propelled howitzers such as the M109A6 Paladin to provide navigation, pointing and self-location, allowing it to be put into action quickly.[citation needed] The Canadian M777 in conjunction with the traditional "glass and iron sights/mounts" also uses a digital fire control system called the Digital Gun Management System (DGMS) produced by SELEX with components of the Indirect Fire Control Software Suite (IFCSS) built by the Firepower team in the Canadian Army Land Software Engineering Centre.[5] The SELEX portion of the system, known as LINAPS, had been proven previously through earlier fielding on the British Army Royal Artillery's L118 Light Gun.[6]

The M777 may be combined with the Excalibur GPS-guided munition, which allows accurate fire at a range of up to 25 miles (40 km). This almost doubles the area covered by a single battery to about 5,000 km2. Testing at the Yuma Proving Ground by the US Army placed 13 of 14 Excalibur rounds, fired from up to 24 kilometres (15 mi), within 10 meters of their target,[7] suggesting a circular error probable of about five meters.

Golf Battery, 2nd Battalion, 11th Marines, out of Camp Pendleton, Calif., dropped the 155 mm M982 Excalibur round on insurgents 36 kilometers away — more than 22 miles — in Helmand province, marking the longest operational shot in the history of the M777 howitzer. This record shot, made in June 2012, was also the first time the M777 had fired the Excalibur in combat.[8]

In 2014 the US military began fielding several upgrades to their M777 howitzers including new liquid crystal display units, software updates, improved power systems, and muzzle sensors for onboard ballistic computing. Future upgrades include a touchscreen Chief Section Display, a new Mission System Computer, and a digital radio.[9]

M777A2 vs legacy M198[10]
M777A2 M198
Weight 9,800 lb (4,400 kg) 16,000 lb (7,300 kg)
Emplacement time 2:10 minutes 6:35 minutes
Displacement time 2:23 minutes 10:40 minutes
Number carried per C-130 Load 2 1


  • M777 – gun with optical fire control
  • M777A1 – digitisation upgrades with the addition of an on-board power source, satellite global positioning, inertial navigation, radio, Gun Display Unit (GDU) and Section Chief Assembly (SCA).
  • M777A2 – Block 1A software upgrade. Addition of an Enhanced Portable Inductive Artillery Fuze Setter (EPIAFS) to enable Excalibur and precision munition compatibility.[10][11]

Service history[edit]

Soldiers with Battery C, 1st Battalion, 321st Airborne Field Artillery Regiment, 18th Fires Brigade, 82nd Airborne Division, fire 155 mm rounds using an M777 Howitzer weapons system, on Forward Operating Base Bostick, Afghanistan, 2009.
Marines fire an M777A2 155 mm howitzer
Marines fire an M777A2 155 mm howitzer

United States[edit]


18th Field Artillery Brigade (Airborne) at Fort Bragg, North Carolina was the initial Army test bed unit for the XM777 Lightweight 155mm Howitzer which included 1st and 3rd Battalions 321st Field Artillery Regiment. Gun Section 2, 2nd Platoon (5th Section) Bravo Battery, 2–11th Field Artillery (FA) was the first US Army unit to fire the M777A2 in combat at 08:23 (Baghdad Time) on 2 January 2008 in support of Operation Iraqi Freedom. 2–11 FA deployed December 2007 with 2nd Brigade Combat Team (BCT), 25th Infantry Division out of Schofield Barracks, Hawaii. In June 2007, the M777 in its A2 configuration was assigned to the U.S. Army's 3rd Battalion, 321st Field Artillery Regiment. 3-321 FA deployed to Afghanistan in support of Operation Enduring Freedom in December 2007 and has become mission capable since January 2008 making 3–321 FA the first U.S. Army unit to utilise the M777 in combat in support of Operation Enduring Freedom. In April 2008, the M777 was deployed for testing with the 2nd battalion, 8th Field Artillery of the U.S. Army at Fort Wainwright in Fairbanks, Alaska. On 20 July 2008, at Camp Shelby, Mississippi, the 1st Battalion, 108th Field Artillery, 28th Infantry Division, Pennsylvania National Guard became the first Field Artillery unit of the National Guard to field and fire the M777. C Battery 1–108th FA was the first National Guard Unit to Shoot the M777 at Camp Shelby, Mississippi.[12] Multiple firing incidents have occurred during training with the M777 including a fatal one in February 2014 with 3-321 FA BN of 18th Fires Brigade at Fort Bragg, NC [13] and previously in 2011 with Marines from Camp LeJeune also at Fort Bragg.[14]

Marine Corps[edit]

In May 2005, 3rd Battalion, 11th Marines, based at Marine Corps Air Ground Combat Center Twentynine Palms, became the first Marine unit to begin fielding the new M777. Five hundred and eighty systems will be supplied to the Marines, and 421 to the U.S. Army and National Guard.[15][16]


In 2008, the Australian Defence Force made a US Foreign Military Sales request for 57 M777A2s worth an estimated US$248m.[17] Subsequently, 35 guns were purchased for the Australian Army to re-equip the 1st Regiment, Royal Australian Artillery and the 4th Regiment, Royal Australian Artillery; replacing 155mm M198s and 105mm L119 Hamels. The first deliveries of M777A2 began in late-2010.[18][19] An additional 19 guns will be bought directly from American production lines to enable a total of six batteries.[20]

Concurrently, the Australian Army has acquired guided 155mm munitions in the form of the M982 Excalibur and XM1156 Precision Guidance Kit[21]


In December 2005, 1st Regiment, Royal Canadian Horse Artillery, conducted an inaugural firing of its first 155 mm M777 towed howitzers, for of a total of six guns. The six guns delivered were supplied by the United States Marine Corps under a Foreign Military Sales (FMS) contract[22] between the U.S. and Canada. First, the guns were tested by B Battery, 1 RCHA at CFB Shilo and then were deployed to Afghanistan in support of Operation Archer, and were put into service in the Canadian theatre of operations around Kandahar in early 2006. In the summer they made a significant contribution during the Battle of Panjwaii when a small number of rounds were used to huge effect on Taliban elements retreating from the battle area. Many of the 72 reported killed during the heaviest period of fighting were due to artillery fire from only two of these guns. In late fall of 2006, the Canadian M777 Howitzers were equipped with the Digital Gun Management System (DGMS), which greatly improved accuracy and led to these guns being used for Short Range Close Support of Canadian and US ground forces. However, until early 2007, ammunition supplies were constrained and led to reduced firing.[23] They proved so successful that an order for an additional six guns was placed with BAE. In May 2009, the Canadian government ordered a further 25 M777s, bringing the total to 37. [24] [25] The DGMS is also being improved with integrated communications.[26]


BAE is offering M777 howitzers to the Colombian Army, along with M109A5/A6 Paladin self-propelled guns, for their artillery contest. The initial purchase is for 12 units, which may be raised to 25 units. A decision among five companies will be made in 2014.[27]


The Indian Army has also announced plans to acquire 145 guns for INR30 billion (US$471 million),[28] but purchase plans were overtaken when the procurement process was restarted in July 2010. India's Ministry of Defence cleared the proposal for buying 145 guns for $660 million on 11 May 2012 through the Foreign Military Sales (FMS) route of the US government.[29] This would be put up before the Ministry of Finance for clearance and will subsequently be taken up by the Cabinet Committee on Security for final approval.[30][31] On 2 August 2013, India requested the sale of 145 M777 howitzers for $885 million.[32] On 24 February 2014 the purchase was again postponed.[33] On 11 May 2014 the purchase was cleared by India's Defence ministry.[34] On 11 July 2014, the Government of India announced that it would not order the guns because of cost issues.[35] On 22 November 2014, the selection process was restarted under the "Make In India" program.[36]

Saudi Arabia[edit]

In 2011, Saudi Arabia ordered 36 M777A2 155mm towed howitzers from the United States, along with 17,136 rounds of High Explosive (HE) ammunition and 2,304 rounds of longer range Rocket Assisted Projectiles (RAPs).

The Saudis have purchased HMMWV vehicles to tow the guns, haul ammo and carry the crews and their gear. However, they didn't order any GPS guided 155mm Excalibur shells for their new M777A2 guns.[37]

Combat history[edit]


  •  Australia: 35 guns for the Australian Army with an addition of 19 on order.[18]
  •  Canada: 37 systems
  •  United States: 1001 systems, 580 for the Marine Corps and 421 for the Army and Army National Guard, have been ordered.[15] Both the US Army and Marine Corps field a "pure fleet" of M777A2 variants.[9]

Future operators[edit]

M777 Light Towed Howitzer in Operation in Logar Province, Afghanistan


See also[edit]


  1. ^ http://www.baesystems.com/ProductsServices/l_and_a_ls_m777_howitzer.html
  2. ^ John Pike. "M777 Lightweight 155mm howitzer (LW155)". Retrieved 4 November 2014. 
  3. ^ "U.S. Upgrades and Orders More Lightweight BAE Systems Howitzers". Press release. BAE Systems – USA. 4 October 2011. Retrieved 6 October 2011. 
  4. ^ "M777 Lightweight 155 mm howitzer (LW155)". GlobalSecurity.org. 
  5. ^ LSEC Firepower Team
  6. ^ Army News article on the Canadian DGMS
  7. ^ "Canada Deploys GPS Shell To Afghanistan". Retrieved 4 November 2014. 
  8. ^ Army halts mortar buys, looks to trade up - Armytimes.com, 8 November 2013
  9. ^ a b "PM Towed Artillery Systems". Defense Media Network. Retrieved 4 November 2014. 
  10. ^ a b Goldman, Harvey I. (12 June 2007). "LW155 Howitzer Towed Artillery Digitization". NDIA Armaments Technology and Firepower Symposium 12 June 2007. .dtic.mil. Retrieved 27 January 2013. 
  11. ^ Gooding and Kratzer, Keith and David (October–December 2008). "PEO GCS's Digitized Towed Howitzer Supports the GWOT". US Army Acquisition Support Center. Army Acquisition, Logistics, and Technology Magazine. p. 32. Retrieved 27 January 2013. 
  12. ^ "Alaska in Brief—March 27" "Army to test new howitzer in Fairbanks", Fairbanks Daily News-Miner, 27 March 2008. Accessed 27 March 2008.
  13. ^ The Christian Science Monitor. "82nd Airborne paratrooper dies in howitzer explosion at Fort Bragg". The Christian Science Monitor. Retrieved 4 November 2014. 
  14. ^ WRAL. "Ten injured during artillery training at Fort Bragg". WRAL.com. Retrieved 4 November 2014. 
  15. ^ a b "DoD Orders 46 Additional M777 Howitzers". Deagel.com. 22 February 2011. Retrieved 2012-07-29. 
  16. ^ page:190
  17. ^ "Australia – M777A2 155MM Light-Weight Howitzers". www.dsca.mil. Defense Security Cooperation Agency. 17 July 2008. Retrieved 12 September 2012. WASHINGTON, July 17, 2008 – The Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Australia of M777A2 155MM Light-Weight Howitzers as well as associated equipment and services. The total value, if all options are exercised, could be as high as $248 million. 
  18. ^ a b Bergmann, Kym (23 October 2010). "Push is on to bring out the big guns". The Australian (News Ltd). Retrieved 4 January 2011. 
  19. ^ Kennedy, Mitch; Doran, Mark (3 March 2011). "Changes in Artillery". Army News (Canberra: Australian Department of Defence). p. 3. 
  20. ^ "Army to get more towed guns". 16 October 2012. Retrieved 16 October 2012. 
  21. ^ FMS: Australia Requests Precision Guidance Kits for 155mm Munitions - Deagel.com, 12 August 2013
  22. ^ "FMS Contract Details". Retrieved 4 November 2014. 
  23. ^ Living with an eerie silence
  24. ^ "BAE Wins $118m Orders for M777 Howitzer". Retrieved 4 November 2014. 
  25. ^ More howitzers on the way
  26. ^ M777 equipped with new digital gun management system
  27. ^ Colombia; BAE Systems offers Paladin, M777 155mm - Dmilt.com, 10 August 2013
  28. ^ Rajghatta, Chidanand (28 January 2010). "US okays howitzers worth $647 million for India". The Times of India. 
  29. ^ HP. "India Orders 145 M777 Ultra Light Howitzers From BAE Systems". Retrieved 4 November 2014. 
  30. ^ "India clears $660 million deal for artillery guns". Economic Times. 11 May 2012. 
  31. ^ "Defence Ministry clears M777 howitzers procurement projects". DNA. 11 May 2012. 
  32. ^ FMS: India Requests Sale of 145 M777 155mm Light-Weight Towed Howitzers - Deagel.com, 7 August 2013
  33. ^ RAGHUVANSHI, VIVEK (24 February 2014). "India Postpones Purchase of 145 Ultra Light Howitzers". www.defensenews.com. Gannett Government Media. Retrieved 24 February 2014. 
  34. ^ "India buys new artillery guns, 27 years after Bofors". 11 May 2014. Retrieved 26 May 2014. 
  35. ^ "Indian MoD says M777 buy in doubt over high cost, offset requirements". 13 July 2014. 
  36. ^ Pandit, Rajat (23 November 2014). "Three decades on, defence minister clears Rs 15,750 crore howitzer projects". indiatimes.com (TNN). Retrieved 22 November 2014. 
  37. ^ "The Arabian Light". 7 October 2011. Retrieved 5 May 2013. 
  38. ^ http://www.ibtimes.com/obama-visit-india-climate-change-civil-nuclear-agreement-security-top-agenda-1780296

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/M777_howitzer — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
18250 videos foundNext > 

**MUST SEE** Airborne Field Artillery in Afghanistan! M777 and M119 Howitzers in Action!

U.S. Soldiers assigned to Alpha Battery, 4th Battalion, 319th Airborne Field Artillery Regiment, 173rd Airborne Brigade Combat Team fire a M777 towed 155mm and a M119 105mm howitzer during...

M777 Howitzer Live-Fire

Marines with Fox Battery, 2nd Battalion, 11th Marine Regiment, participate in a live-fire exercise aboard Marine Corps Base Camp Pendleton. The exercise allowed the Marines to coordinate fire...

M777 Howitzer Direct Fire At Taliban Positions

Daily Military News & Combat Footage at FUNKER530.com - http://vid.io/xGB Bravo Battery 3-321 firing their M777 howitzer at Taliban positions. Join the FUNKER530 community at ...

M777 Howitzer 155mm

US Marines Firing the M777 155mm Howitzer

Marines with Fox Battery, 2nd Battalion, 11th Marine Regiment firing the M777 155mm howitzer. Video by Lance Cpl. Ashton Buckingham | 1st Marine Division AiirSource covers military events...

BAE Systems - M777 155mm Lightweight Field Howitzer Portee System [480p]

A system solution combining the world leading M777 lightweight howitzer with a Portee vehicle to deliver enhanced operational capability and flexibility. The M777 Portee System is capable...

M777 Howitzers Engage Firing Position in Afghanistan

Daily Military News & Combat Footage at FUNKER530.com - http://vid.io/xGB M777 howitzers engage the ridgeline where enemy fire was coming from moments before with 155mm shells. These guns ...

M777 155mm Howitzer impact

don't get hit by one these.

M777 Howitzer Firing Bravo Battery 3-321 HD Video 1

M777A2 Howitzer Firing in Afghanistan... Practice. Using an Everio HD 1080P Camera. Shot the video myself. If you like this video there'll be more coming!

Zbraně, které změnily svět M777 Howitzer CZ Dabing SUPER DOKUMENT!!!

18250 videos foundNext > 

233 news items

DVIDS (press release) (registration)
Thu, 19 Mar 2015 14:22:30 -0700

“Normally, we are out here to shoot our M777 Howitzer cannons, but we took a day to come out and fire the Expeditionary Fire Support System,” said Cpl. Christian Henry, a field artillery cannoneer section chief with Golf Battery, 2/10. “With this ...
DVIDS (press release) (registration)
Thu, 26 Mar 2015 16:37:30 -0700

Cpl. Calvin V. Montgomery uses his whole body to pull the lanyard of an M777 Howitzer, firing a 155 mm round March 11 during Dragon Fire Exercise 15-2 at Pohakuloa Training Area, Hawaii. Howitzers are used by artillery batteries to provide suppressing ...
Wed, 04 Mar 2015 13:25:32 -0800

Three weeks of training started Tuesday on the M777 Howitzer, a weapon used extensively for years, but just being introduced to the First Battalion 76 Field Artillery. "It's a real big honor to be out here right now, my section and my platoon and my ...
DVIDS (press release) (registration)
Fri, 20 Mar 2015 12:30:00 -0700

CAMP PENDLETON, Calif. - Usually the list of essential items for a unit's Family Day consists of just hamburgers and hot dogs, but for the Battery B, 1st Battalion, 11th Marine Regiment, 1st Marine Division, Family Day they added flak jackets and ...

Wall Street Journal

Wall Street Journal
Sat, 24 Jan 2015 21:54:30 -0800

NEW DELHI—BAE Systems PLC has offered to build a howitzer factory in India to close a deal valued at more than $800 million after years of stalled talks left it closing plants in the U.S. and the U.K. that were supposed to produce the artillery. The ...

Hawaii Army Weekly

Hawaii Army Weekly
Fri, 31 Oct 2014 14:22:30 -0700

“We are starting the table five certification for the M777 howitzer crew members,” said Capt. Jason Stanley, assistant operations officer, 2-11th FA. “This training allows us to see what areas we need to focus on as we create our training plans in ...

Marines.mil (press release)

Marines.mil (press release)
Fri, 10 Oct 2014 06:11:07 -0700

A CH-53E Super Stallion lowers a M777 Howitzer and its ammunition onto a landing zone aboard Marine Corps Base Camp Lejeune, N.C., as part of a reactionary combat training exercise Sept. 30, 2014. The purpose of the exercise was to build cohesion ...

The Hindu

The Hindu
Sun, 01 Feb 2015 04:00:00 -0800

It's the M777 howitzer programme. Deepak Parekh: This company is BAE Systems India. BAE Systems Services India with 100% equity. If you see the number of announcements the Government has made, for instance, Make in India cannot succeed unless ...

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight