Objective Crew Served Weapon (OCSW)
The Objective Crew Served Weapon (OCSW), XM307, will be the dismounted infantry crew served weapon and defensive armament system for seven variants of the Future Combat System. The system includes: a 25mm automatic cannon capable of firing airburst and armor piercing ammunition; and, a .50 Cal Variant(XM312). The system (25mm and .50 Cal Variant) provides increased lethality and significant reductions in weight and supportability costs. The high explosive airbursting munition provides incapacitation and suppression out to 2,000 meters against both exposed and defilade personnel targets and light skinned vehicles. The OCSW is a transition from Advanced Technology Demonstration/Development (ATD)(BA 3 PE 63607/D627) to BA 5 (PE 64601/D627) however, the effort for the .50 Cal Variant will be a new start in FY04. This FCS subsystem supports the Legacy to Objective transition path of the Transformation Campaign Plan.
The Objective Crew Served Weapon (OCSW), which constitutes the weapon sub-system portion of the Land Warrior program, is an integrated machine gun system which couples the firepower of air bursting munitions with optoelectronic fire control to provide all-environment operation and enhanced lethality. The OCSW is an ultra-light, two-man portable, crew-served weapon system incorporating state-of-the-art electronics, advanced materials, and small arms technologies. This unique weapon permits a high probability of incapacitation and suppression of enemy soldiers up to 2000 meters away and has a high potential to damage lightly armored vehicles, water craft, and slow-moving aircraft beyond 1000 meters. The OCSW is the potential replacement weapon for the 40mm MK19 Grenade Machine Gun and the caliber .50 M2 Machine Gun.
The Objective Crew Served Weapon fires up to 260 25 mm rounds per minute in either automatic or semi-automatic mode. The trajectory of the rounds are flatter than the MK-19 which brings more rounds on target faster. The weapon has dual hand grips which allow the gun to be raised or lowered and moved laterally with a touch of a button. This means the gunner never has to take his hands off of the weapon. It uses a Direct View Optics similar to the OICW. The biggest advantage over the MK-19 is the weight. A MK-19 weighs about 140 pounds, while the OCSW weighs 37 pounds with the tripod. Its light-weight could increase the number of mission roles the OCSW could handle over the MK-19. A two man team could easily carry it into combat and it takes about a minute to set up. The OCSW is in the same development stage as the OICW.
The 25mm OCSW System is a next generation infantry weapon providing accurate, long range, high explosive, airburst firepower in a compact, self-contained, light weight package. The system consists of an advanced weapon and mount, a target acquisition/fire control system, and advanced ammunition. The OCSW has high potential for widespread use as a primary or secondary armament for a variety of vehicles and can be quickly dismounted and put into action on the ground. The 25mm system has a full solution fire control system including a laser range finder and a day/night sight. It delivers a highly lethal and suppressive fire out to 2,000 meters against personnel targets, light material targets and vehicles.
The program is managed by the Joint Service Small Arms Program (JSSAP) Office, U.S. Army Armament Research, Development and Engineering Center, Picatinny Arsenal, New Jersey.
In January 2001 the Joint Services Small Arms Program office of the US Army ARDEC/TACOM Command at Picatinny Arsenal, NJ awarded Primex Technologies a $17.0 million contract modification for the Advanced Technology Demonstrator Program for the Objective Crew Served Weapon System. This award brings the total contract value to $45.2 million for the OCSW System development program. Three systems and advanced ammunition were scheduled for delivery to the Aberdeen Test Center in June 2002 for technical, safety and early operational assessment testing.
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Specifications
Weight 32 Pounds (Gun and Mount)
Fire Control Full Solution, Day/Night, All Weather
Portability Two-Man Portable & Vehicle Mountable
Stability Up to 18 Inch Tripod Height
Environmental Operationally Insensitive to Conditions
Rate of Fire 260 SPM, Automatic or Semi-Automatic
Dispersion Less than 1.0 Mils, One Sigma Radius
Range Lethal and Suppressive Out to 2,000 Meters
Ammunition 13.4 Pound-Second 25mm Air Bursting Ammunition (HE, AP, TP)
Feed System Weapon Mountable Ammunition Can (Right/Left Feed)
