Airburst Weapon System is currently under development and intended
to address the capability gap of defeating defilade targets.
The weapon has the capability to hit point targets at a distance
of 500 meters and area targets at 700 meters. 25mm munitions
currently in development include High Explosive Air-Burst (HEAB),
armor piercing, door breaching, anti-personnel, and two types
of non-lethal munitions – blunt and agent dispersing airburst.
The XM-307 Advanced Crew Served Weapon (ACSW) and a derivative
XM-312 machine gun are designed to fire 25mm and 0.50 Caliber
(12.7mm) ammunition. ACSW will fire the same 25mm ammunition
developed for the XM25. The XM307 weighs about 92 lbs including
the gun, two ammunition cans of 37 rounds each, fire control
and tripod. Maximum rate of fire is 250 rounds per minute. However,
the weapons accuracy enables gunners to achieve the desired
effect with fewer rounds. The XM312 version will weigh about
43.7 lbs, (compared to the current 128 lbs of the M2HB). It
will use gas recoil operation, and have soft recoil mechanism
to minimize load on tripod or mount and least affect the gunner.
Effective firing range for lethal and suppressive fire is about
2,000 meters. The weapon will be able to fire all types of 0.50
Caliber ammunition, including ball, API and SLAP.
The development phase is funded through 2007, and managed by
by GDATP under a cost-plus-award-fee contract with a total projected
value of $94.8 million awarded by the U.S. Army Tank-Automotive
and Armament Command. GDOTC is developing the new family of
25mm ammunition while Raytheon is responsible for the full solution
General Dynamics is also working on a development of a Remotely
Operated Variant (ROV) of the XM-307 which will be used in the
US Army Future Combat Systems family of vehicles. The weapon
will be integrated into a vehicle-mounted firing station that
is remotely controlled by the operator. Cameras and range finders
in the firing station will allow the operator to accurately
identify and engage targets while remaining safely protected
within the vehicle. The ROV program is also funded by the U.S.
Army Tank-Automotive and Armaments Command (Picatinny).