M10 Booker

Not to be confused with M10 tank destroyer.
M10 Booker
M10 Booker at its unveiling in June 2023
TypeArmored fighting vehicle
Assault gun
Place of originUnited States
Production history
DesignerGeneral Dynamics Land Systems
Specifications
Massroughly 38–42 tonnes (37–41 long tons; 42–46 short tons)
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
EngineDiesel MTU 8V199 TE23
15.9 L, 1,070 hp (800 kW)
TransmissionAllison Transmission 3040 MX cross-drive
SuspensionHydropneumatic
Operational
range
250–350 mi (400–560 km)
Maximum speed 45 mph (72 km/h)

The M10 Booker is an armored fighting vehicle under development by General Dynamics Land Systems (GDLS) for the United States Army, developed from the GDLS Griffin II armored fighting vehicle as the winner of its Mobile Protected Firepower program in June 2022. The initial contract is for 96 low rate initial production (LRIP) vehicles, with first delivery by the end of 2023.

Classification

The vehicle is called a light tank by some military officers and defense media due to its design and appearance, though Army officials related to the MPF program consider this incorrect. It is to weigh about 42 tons and will according to description essentially serve the role of an assault gun.

The M10 Booker is an armored vehicle that is intended to support our Infantry Brigade Combat Teams by suppressing and destroying fortifications, gun systems and trench routes, and then secondarily providing protection against enemy armored vehicles.

— Maj. Gen. Glenn Dean, program executive officer of Army Ground Combat Systems,

Background and selection

An M10 Booker on the move
A Mobile Protected Firepower Griffin II firing its 105 mm caliber M35 cannon during U.S. Army trials

Derived from the Austrian-Spanish ASCOD infantry fighting vehicle-platform, the GDLS Griffin II was offered under Army's Mobile Protected Firepower (MPF). In accordance with the program's caliber requirements, it incorporated a 105 mm M35 tank gun and a redesigned chassis. The M35 was originally designed and developed by Benét Laboratories, Watervliet Arsenal, in 1983 for the Marine Corps' Mobile Protected Gun Program. It was later incorporated in the Army's M8 Armored Gun System light tank, which was canceled in 1996. The M35 is about 1,800 lb (816 kg) lighter than the M68 used on the M60 tank.

In December 2018, GDLS was downselected, along with BAE Systems, to develop prototypes. GDLS presented its first prototype in April 2020. BAE's M8 AGS proposal was disqualified in March 2022. In June 2022, GDLS won the Mobile Protected Firepower program competition and was awarded a contract worth up to $1.14 billion.

The MPF was officially designated "M10 Booker" in June 2023, named for Staff Sgt. Stevon A. Booker and Pvt. Robert D. Booker.

Organization and allocation

The Army is set to procure up to 504 M10s, all of which will be allotted to light divisions in the active duty and National Guard. The 82nd Airborne Division will become the first unit equipped when 33 M10s enter Fort Liberty motor pools in late FY25. The 82nd will initially field a battalion of M10s, divided into three companies. The M10s will be controlled as a divisional asset. Commanders will determine, based on mission objectives, which infantry brigade combat teams (IBCTs) will be supported by the M10-equipped battalion. The armored vehicles might be spread out evenly among the division’s IBCTs, or two companies might be assigned to a single IBCT with another company held in reserve, or some other combination. As of 2023, the Army is in the midst of transition from brigades to divisions as the tactical unit of action. It will be the division commander who will have the flexibility to configure the force to take advantage of all the division’s capabilities—retaining a tactical overmatch to the adversary that can be tailored to a specific battlefield scenario.

See also