US Army orders XM813 production, delivery and support
The XM813 is a 30x173mm calibre cannon. (Photo: Northrop Grumman)
The XM813 cannon forms part of the Stryker Medium Caliber Weapon System 30mm Lethality Upgrade programme.
US Army Contracting Command has awarded a $105.69 million contract modification to Alliant Techsystems Operations (part of Northrop Grumman) to produce, deliver, and maintain new-production configuration 30x173 mm XM813 cannons.
Work locations and funding will be determined with each order, with an estimated completion date of 24 September 2026, the DoD announced on 7 May.
Alliant Techsystems Operations was awarded the original $37.67 million contract in September 2020 to buy long-lead XM813 items for the Stryker Medium Caliber Weapon System 30mm Lethality Upgrade programme.
A subsequent first order calls for 95 XM813 Bushmaster Chain Guns with initial deliveries beginning in 2022. As well as supporting enhancements to the XM813, the chain gains will be integrated into an additional US Army Brigade Combat Team.
The XM813 is a 30x173mm calibre cannon derived from the Mk44 Bushmaster Chain Gun integrated on air, land and naval platforms.
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