M10 Booker (Griffin II / MPF)

The GDLS Griffin II demonstrator won the US Army's Mobile Protected Firepower (MPF) competition in June 2022 on a contract worth up to $1.14 billion for up to 96 low-rate-initial-production vehicles, and was officially redesignated M10 Booker in June 2023; it is the same vehicle line carried into production, not a separate design. Per Wikipedia's infobox, the production M10 Booker is an assault gun/armored infantry support vehicle developed from the ASCOD 2 platform, weighing roughly 38-42 metric tons, crewed by 4 (commander, gunner, driver, loader), armed with a 105mm M35 tank gun plus a 12.7mm M2HB heavy machine gun and 7.62mm M240B coaxial machine gun, powered by an MTU 8V199 TE23 diesel engine (800 hp) through an Allison 3040 MX cross-drive transmission on hydropneumatic suspension, with a top speed of 40 mph (64 km/h) and a range of 250-350 miles (400-560 km). The Army took delivery of the first production vehicle in February 2024 and tested it in Arizona and Alaska through early 2025, but cancelled the program in May 2025 as part of the Army Transformation Initiative, citing the vehicle's weight growth to 42 tons (versus its original ~30-ton airdrop-transportable requirement) and shifting acquisition priorities; roughly 26 vehicles had been delivered by the time of cancellation, with an uncertain future (potential transfer to armored units, foreign sale, or storage). Two other Griffin-family demonstrators never reached production: Griffin I (a 2016 120mm XM360 technology demonstrator) and Griffin III (a 50mm XM913-armed demonstrator for the now-defunct XM30/Next-Generation Combat Vehicle effort).