# OCSW

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1980s United States military arms program

The **OCSW** (*Objective Crew Served Weapon*) was a U.S. Military arms program started in the 1980s that led to a hybrid smaller [prototype](/source/Prototype) automatic [autocannon](/source/Autocannon) developed by [General Dynamics](/source/General_Dynamics) Armament Systems. It led to the [XM312](/source/XM312) and [XM307](/source/XM307) designs.

As a part of the SAMP (*Small Arms Master Plan*) program, it had the same laser targeting system as the [XM29 OICW](/source/XM29_OICW), but was intended to supplement the 40 mm [Mk 19 grenade launcher](/source/Mk_19_grenade_launcher) and the .50 [M2 Browning machine gun](/source/M2_Browning_machine_gun). It could fire [armor-piercing](/source/Armor-piercing) or [explosive](/source/Explosive) 25 mm grenades at a cyclic rate of 260 rounds per minute, and had an effective range up to 2 kilometres. It underwent combat trials before being cancelled.

## See also

- [Objective Individual Combat Weapon](/source/Objective_Individual_Combat_Weapon) A related project.

- [Autocannon](/source/Autocannon)

- [Mk 47](/source/Mk_47_Striker) a 40 mm grenade launcher, also replacing the Mk 19 in some roles.

- [XM25 CDTE](/source/XM25_CDTE) a 25 mm low velocity smart cannon/grenade launcher for an individual soldier.

- [XM8](/source/XM8_rifle) a 5.56 mm weapon system

- [Barrett XM109](/source/Barrett_XM109) a rifle designed to fire the same 25 mm grenades

## External links

- [Defense-Update.com article on XM307 OCSW](http://www.defense-update.com/products/x/xm307.htm)

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Adapted from the Wikipedia article [OCSW](https://en.wikipedia.org/wiki/OCSW) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/OCSW?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.