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.
As part of our promise to deliver comprehensive coverage to our Defence Insight and Premium News subscribers, our curated defence news content provides the latest industry updates, contract awards and programme milestones.
Related Equipment in Defence Insight
More from Land Warfare
-
![Western Europe is looking to refresh its APC/IFV fleets with potential $41 billion spend]()
Western Europe is looking to refresh its APC/IFV fleets with potential $41 billion spend
As militaries across Western Europe continue to modernise their capabilities, there are some major potential opportunities in the requirement for armoured personnel carriers and infantry fighting vehicles.
-
![US Army orders more upgraded Bradleys as transformation threatens other programmes]()
US Army orders more upgraded Bradleys as transformation threatens other programmes
Compared to previous versions of the vehicle, the Bradley M2A4 upgrade includes an uprated suspension, a more powerful engine, an independent commander’s sight, a more capable electronic architecture and improved networking capabilities.
-
![De-Risking the Future: Manufacturing Certainty for Unmanned Systems]()
De-Risking the Future: Manufacturing Certainty for Unmanned Systems
How strategic manufacturing partnership solves the industrialisation triad — Scale, Compliance and Cost — for hyper-growth defence tech innovators.
-
![Battlefield mobility, made in the UK]()
Battlefield mobility, made in the UK
How does Britain ensure that we can preserve the lives of our soldiers and allies – now and in the future – with homegrown innovation and resilient domestic manufacturing? At Pearson Engineering, we are proud to be a central part of the answer to this increasingly important question.
