The M1026 and M1026A1 HMMWVs are Armament Carrier configurations of the HMMWV family.

The vehicles are equipped with basic armor and the weapon mount, located on the roof of the vehicle. The MM1026 and M1026A1 armament carriers provide mounting and firing of the MK19 automatic grenade launcher; M2, caliber .50 machine gun; and M60, 7.62 mm machine gun; ring-mounted with 360° arc of fire, with armor protection for crew, weapon components, and ammunition.

The difference between the M1025, M1025A1, and M1025A2 armament carriers and the M1026 and M1026A1 armament carriers is that the M1025 and M1025A1 do not have winches and the M1026 and M1026A1 do. The M1026 and M1026A1 are equipped with winches. This feature permits recovery operations of similar vehicles. c. Performance.

Fully-loaded M1026 and M1026A1 armament carriers will climb road grades as steep as 60% (31°) and traverse a side slope of up to 40% (22°). The vehicles ford hard bottom water crossings up to 30 inches (76 centimeters) without a deep water fording kit and 60 inches (152 centimeters) with the kit.

The M1026A1 models have the latest modifications applied to the vehicles.