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.