XM307 Advanced Crew Served Weapon

The system was under development by General Dynamics Armament and Technical Products for the U.S. Army Tank-Automotive and Armaments Command (TACOM). As a part of the Small Arms Master Plan (SAMP) program, it is intended to either replace or supplement the Mk19 automatic grenade launcher and the M2 heavy machine gun. It fires 25 mm point-detonating and air burst style ammunition, including HE, and HEAT at a cyclic rate of 260 rounds per minute and has an effective range up to 2 kilometers.{{cite book|last=Usa|first=Ibp|title=Us Future Combat & Weapon Systems Handbook|url=https://books.google.com/books?id=lPmVrgeVoI0C&pg=PA265|date=30 March 2009|publisher=Int'l Business Publications|isbn=978-1-4387-5447-5|page=265}}

The primary feature of the XM307 is its attenuated recoil system. The weapon controls recoil to a degree that a large tripod and heavy sandbags are not required to effectively employ this weapon. Because of its reduced recoil impulse and light weight, other mounting options are possible, such as small unmanned vehicles and aircraft. The XM307's airburst rounds make it much easier to bypass walls protecting enemies that could cause collateral damage if fired upon directly. Operators do not have to shoot through the wall, just through an opening or over the top to kill the people behind the cover, leaving the structure of the building intact. An additional feature of the XM307 is that it can be converted into the XM312, a 12.7 mm (.50)-caliber version for infantry and light anti-armor support in under two minutes (1 minute, 42 seconds).

File:25mm TP ACSW projectile.jpg

System

• Weight: 50 lb (22.5 kg) (gun, mount, and fire control)
• Fire Control: full solution, day/night
• Portability: two-man portable and vehicle mountable
• Stability: up to 18 inch (457 mm) tripod height
• Environmental: operationally insensitive to conditions

Gun

• Dimensions: 9.9 W × 7.2 H × 52.3 L max inches (43.3 L charged) / 251 mm × 183 mm × 1328 mm (1100 mm charged)
• Rate of Fire: 250 rounds per minute, automatic
• Dispersion: less than 1.5 mils, one sigma radius
• Range: lethal and suppressive out to 2,000 m
• Ammunition: high-explosive airbursting, armor-piercing, and training ammunition (HE, AP, TP, TP-S)
• Feed System: weapon-mountable ammunition can (left feed)

A Remotely Operated Variant (ROV) for the Future Combat Systems family of vehicles is also under development.{{Cite web |url=http://www.defenseindustrydaily.com/2005/11/xm307-madeuce-replacement-gets-more-investment/index.php |title=XM307 Ma-Deuce Replacement Gets More Investment |access-date=2 September 2006 |archive-date=12 June 2007 |archive-url=https://web.archive.org/web/20070612000734/http://www.defenseindustrydaily.com/2005/11/xm307-madeuce-replacement-gets-more-investment/index.php |url-status=dead }} The weapon system, which would be mounted on the vehicle, will be remotely operated from within the vehicle.

In May 2004, the development phase was funded through FY 2007.{{cite web |url= http://www.globalsecurity.org/military/systems/ground/m307.htm|title= XM307 Airbursting Weapon System - Advanced Crew Served Weapon|access-date=2008-06-10|date= 2008-04-07|publisher= GlobalSecurity.org}}

In December 2005 funding was granted for a remote-control vehicle variant.

However, in 2007 the project was canceled due to the low rate of fire of the prototypes.{{Cite web|url=http://www.strategypage.com/htmw/htweap/articles/20080519.aspx|title = Weapons: Ma Deuce Goes Back to the Drawing Board}}

• LAG 40 grenade launcher, an automatic grenade launcher used by Spain
• Vektor Y3 AGL, an automatic grenade launcher of South African origin
• Heckler & Koch GMG, a 40 mm automatic grenade launcher used by the German Army and other European armed forces
• XM174 grenade launcher
• AGS-30, a similar weapon, 30mm calibre
• XM312, a .50 BMG version of the XM307
• Mk 47, a similar but older automatic 40 mm grenade launcher, also replacing the Mk 19 in some roles.
• XM25 CDTE, a 25mm low-velocity smart cannon/grenade launcher for an individual soldier
• XM29 OICW
• Comparison of automatic grenade launchers

{{reflist}}

{{commons}}

• [https://web.archive.org/web/20080329002156/http://dsc.discovery.com/tv/future-weapons/weapons/zone2/xm307/xm307.html Discovery Website - XM307 video clip]
• [http://www.globalsecurity.org/military/systems/ground/m307.htm M307 Airbursting Weapon System Advanced Crew Served Weapon - Global Security]
• [http://world.guns.ru/grenade/gl24-e.htm XM307 ACSW Advanced Crew-Served Weapon - Modern Firearms]
• {{usurped|1=[https://web.archive.org/web/20061018095323/http://www.gdatp.com/products/PDFs/XM307.pdf General Dynamics: Fact Sheet on the XM307]}}

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Category:Grenade launchers of the United States

Category:Automatic grenade launchers

Category:Autocannon

Category:Abandoned military projects of the United States