From DefenseTech.org
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http://www.defensetech.org/archives/003805.html
A Primer in MRAP Variants
MRAP is an unusual program that involves rolling purchases of a wide range of vehicle types, all meeting the same basic mobility and protection requirements.
The requirements do not specify how a vehicle should meet them, so manufacturers take different approaches, with some embracing a monocoque style that combines the hull and chassis in a single piece, and others bolting an armored hull to a separate chassis, perhaps with a "belly plate" to protect the drive train. All hull designs are V-shaped, though some are flatter than others to maximize interior space.
The manufacturers give their vehicles model names like "Cougar" and "Alpha," but the MRAP program office tends to refer to them only by category. The three categories in the program each describe a different weight class and size and are intended for different missions. The roughly 7,800 vehicles ordered as of August are split between the four main military services and Special Operations Command.
The following is a summary of the categories, vehicle types, key performance specifications, design strengths and weaknesses, and mission information for the MRAP vehicles procured by the Pentagon.
Category I: approximately 7-15 tons; at least 4 passengers, plus 2 crew; urban transport.
Category II: approximately 15-25 tons; up to 8 passengers, plus 2 crew; road escort, ambulance and bomb-disposal missions.
Category III: approximately 25 tons; at least 4 passengers, plus 2 crew; bomb disposal.
Category I
Cougar H 4 X 4: Force Protection Industries Inc. (Ladson, S.C.). Weight: 16 tons. Passengers: 4 + 2 crew. MRAP I orders: 785 + several for testing. Cost: $475,000. Features: Monocoque, flattened V-shaped hull extended to engine compartment; 330-hp. engine; dual air conditioners; rear door.
RG-33 4 X 4: BAE Systems North America (Rockville, Md.). Weight: 14 tons. Passengers: 4 + 2 crew. MRAP I orders: 201 + several for testing. Cost: approximately $300,000. Features: Monocoque, flattened V-shaped hull that stops short of engine compartment; rear door.
MaxxPro 4 X 4: International Military and Government LLC (Warrenville, Ill.). Weight: 16 tons. Passengers: 4 + 2 crew. MRAP I orders: 1,955 + several for testing. Cost: $548,000. Features: Commercial truck chassis with a bolt-on V-shaped armored hull; 330-hp. engine; rear door.
Caiman 4 X 4: Armor Holdings LLC (Jacksonville, Fla.). Weight: 14 tons. Passengers: 4 + 2 crew. MRAP I orders: 1,154 + several for testing. Cost: $443,000. Features: Family of medium tactical vehicle (FMTV) chassis with a V-shaped armored hull; rear door.
Alpha 4 X 4: Oshkosh Truck (Oshkosh, Wis.). Weight: 13 tons. Passengers: 6 + 2 crew. MRAP I orders: 100 + several for testing. Cost: $306,000. Features: Monocoque layout with V-shaped armored hull; rear door.
RG-31 Mk 5 4 X 4: General Dynamics Land Systems Canada (London, Ont.). Weight: 9 tons. Passengers: 10 + 2 crew. MRAP I orders: 10 + several for testing. Cost: approximately $300,000. Features: Monocoque, flattened V-shaped hull that stops short of engine compartment; rear door.
M1117 4 X 4: Textron (Providence, R.I.). Weight: 12 tons. Passengers: 8 + 3 crew. MRAP I orders: 4 for testing. Features: Flattened V-shaped hull; side door; 260-hp. engine. Cost: $690,000.
Category II
Cougar HE 6 X 6: Force Protection Industries Inc. (Ladson, S.C.). Weight: 24 tons. Passengers: 10 + 2 crew. MRAP I orders: 920 + several for testing. Cost: $644,000. Features: Monocoque, flattened V-shaped hull extended to engine compartment; dual air conditioners; rear door.
RG-33L 6 X 6: BAE Systems North America (Rockville, Md.). Weight: 22 tons. Passengers: 12 + 2 crew. MRAP I orders: 330 + several for testing. Cost: approximately $630,000. Features: Monocoque, flattened V-shaped hull that stops short of engine compartment; rear door, exportable power; robotic claw arm.
RG-31E 6 X 6: General Dynamics Land Systems Canada (London, Ont.). Weight: approximately 20 tons. Passengers: at least 10 + 2 crew. MRAP I orders: 610 + several for testing. Cost: $559,000. Features: Monocoque, flattened V-shaped hull that stops short of engine compartment; rear door.
MaxxPro XL 4 X 4: International Military and Government LLC (Warrenville, Ill.). Weight: 18 tons. Passengers: 10 + 2 crew. MRAP I orders: 16 + several for testing. Cost: $540,000. Features: Commercial truck chassis with a bolt-on V-shaped armored hull; rear door.
Golan 4 X 4: Protected Vehicles Inc. (North Charleston, S.C.). Weight: 15 tons. Passengers: 10 + 2 crew. MRAP I orders: 60 + several for testing. Cost: $623,000. Features: Monocoque, V-shaped armored hull; rear door.
Caiman 6 X 6: Armor Holdings LLC (Jacksonville, Fla.). Weight: 24 tons. Passengers: approximately 10 + 2 crew. MRAP I orders: 16 + several for testing. Cost: approximately $600,000. Features: FMTV chassis with a V-shaped armored hull; rear door.
Category III
Buffalo 6 X 6: Force Protection Industries Inc. (Ladson, S.C.). Weight: 25 tons. Passengers: 4 + 2 crew. MRAP I orders: 58 + several for testing. Cost: $856,000. Features: Monocoque, flattened V-shaped hull extended to engine compartment; 400-hp. engine; rear door; robotic claw arm.