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Land Platforms

Orbital ATK rolls out XM813 automatic cannon for US Army Strykers

25 September 2017

Orbital ATK Armament Systems is ramping up production of their latest 30 mm calibre XM813 Bushmaster dual feed automatic cannon.General Dynamics Land Systems Stryker XM1296 fitted with the Kongsberg Medium Calibre Remote Controlled Turret armed with the latest Orbital ATK Armament Systems 30 mm XM813 dual feed automatic cannon. (GDLS)General Dynamics Land Systems Stryker XM1296 fitted with the Kongsberg Medium Calibre Remote Controlled Turret armed with the latest Orbital ATK Armament Systems 30 mm XM813 dual feed automatic cannon. (GDLS)

The weapon will first be installed in the Kongsberg Medium Calibre Remote Controlled Turret (MC-RCT) installed on the latest General Dynamics Land Systems (GDLS) 8x8 Stryker XM1296 as part of the US Army’s Stryker Lethality Upgrade Programme (Stryker LUP).

Orbital ATK Armament Systems is under contract to supply a total of 95 XM813 weapons to GDLS for the Stryker LUP.

The first batch of 12 XM813 weapons has already been supplied for the engineering, manufacturing, and development (EMD) phase which is now completed.

The company was then awarded a production contract to supply the remaining 83 weapons with deliveries having commenced in June and expected to be completed in March 2018.

The MC-RCT is also armed with a 7.62 mm machine gun (MG), banks of electrically operated grenade launchers and with gunners stabilised day/night sight to the right of the XM813.

The 30 mm XM813 barrel is chrome lined and heavier than the 30 mm MK44, and features a muzzle brake as well as a new dual recoil system.

An important feature of the MC-RCT is that the weapons can be loaded from under armour. The Meggitt linkless ammunition feed system has two ammunition boxes, each holding 150 rounds of ready use ammunition.

The dual feed system provides the gunner ‘true’ first round select capability, which is the ability to select and fire a round from either ammunition box without sacrificing a round that has previously been chambered.

In addition to firing the standard natures of 30x173 mm ammunition such as high-explosive incendiary (HE-I), high-explosive incendiary-tracer (HEI-T), high-explosive incendiary-tracer/self-destruct (HEI-T/SD), and associated training ammunition, the XM813 can also fire the 30 mm MK310 programmable air burst munition-traced (PABM-T).

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