Xm307

It is the result of the OCSW or Objective Crew Served Weapon project. It is lightweight and designed to be two-man portable, as well as vehicle mounted.

Future Weapons: The XM307 Auto-Grenade Launcher

XM307 25mm Machine Gun

Future Weapons: The New XM307

XM-307 全自動榴彈發射器

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. The weapon controls recoil to a degree that a large tripod and heavy sandbags are not required to effectively employ this weapon.

The New XM307 Auto-Grenade Launcher

Future Weapons: The New XM307 Auto-Grenade Launcher

Because of this reduced recoil impulse and light weight, other mounting options are also possible such as small unmanned vehicles and aircraft. They do not have to shoot through the wall, just through a window or over the top and kill the people behind the cover, leaving the structure of the building intact.

Future Weapons XM307/XM312

Also, in under 2 minutes, it can be converted into the XM312, a .50 cal version for infantry and light anti-armor support.
Specification
System weight: 50 lbs (22 kg) (Gun, mount, and fire control).
Fire Control: Full solution, day/night.
Portability: Two-man portable & vehicle mountable.
Rate of Fire: 250 rounds per minute, automatic.
Dispersion: Less than 1.5 mils, one sigma radius.
Range: Lethal and suppressive to 2,000 meters.
Ammunition: High-explosive air bursting, armor piercing, and training (HE, AP, TP, TP-S).

Variants
A Remotely Operated Variant (ROV) for the Future Combat Systems family of vehicles is also under development. The weapon system, which would be mounted on the vehicle, will be remotely operated from within the vehicle.
Program status
May 2004 - The development phase is funded through FY 2007.
December 2005 - Funding granted for ROV variant.

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