M10 Booker

M10 Booker
M10 Booker at its unveiling in June 2023
Type	Assault gun[1] Armored infantry support vehicle[2]
Place of origin	United States
Service history
In service	2024-2025 (testing)[3]
Used by	See Operators
Production history
Designer	General Dynamics Land Systems
Specifications
Mass	Roughly 38–42 tonnes (37–41 long tons; 42–46 short tons)[4][5]
Main armament	1 × 105 mm M35 tank gun
Secondary armament	1 × 12.7 mm M2HB heavy machine gun 1 × 7.62 mm M240B machine gun
Engine	Diesel MTU 8V199 TE23[6] 15.9 L, 800 hp (600 kW)
Transmission	Allison Transmission 3040 MX cross-drive
Suspension	Hydropneumatic[7]
Operational range	250–350 mi (400–560 km)
Maximum speed	40 mph (64 km/h)[8]

The M10 Booker is an American assault gun^[1] produced by General Dynamics Land Systems (GDLS) for the United States Army. The M10 was developed from the GDLS Griffin II armored fighting vehicle as the winner of its Mobile Protected Firepower (MPF) program in June 2022. The initial contract was for 96 low rate initial production (LRIP) vehicles, the first of which were delivered in February 2024;^[9][10] however, on 2 May 2025, Army Secretary Dan Driscoll announced that the program was cancelled due to cost, a poorly negotiated maintenance contract, its weight, and its design. The Army had taken delivery of approximately 80 of the vehicles when the program was cancelled. The vehicles have an uncertain future and may be transferred to armored units, sold abroad, or placed in storage.