The protection suit, designed by O'Gara-Hess Eisenhardt (now called Centigon) of the Armor Holdings group provides a complete perimeter ballistic protection shell for the crew. The armor suit is based on the use of composite and ceramic materials, as well as transparent armor, providing high protection while meeting strict weight limitations. The armor is effective against small arms fire and fragments, as well as against anti-tank mine blasts under the front or rear wheels. The armor shell provides overhead protection against airburst and shrapnel. The total vehicle's weight is 5,489 lbs.

O'Gara also offers an add-on armor protection kit which can be used as an interchangeable armor system, suitable for most derivatives of the M998 A2 Humvee. This field installed HArD-Kit provides protection from small-arms fire (5.56 and 7.62mm) and shrapnel, as well as overhead protection and floor protection, from exploding grenades or airburst ammunition. These kits weigh between 1,500 to 2,200 lbs and enable the vehicle to carry a payload of between 2,200 to 2,900 lbs, depending on the configuration.