APCs such as the M113 were designed to ferry a squad of troops into battle and protect them from small arms fire. Once the vehicle came to a stop, a rear ramp would be lowered so that the troops riding inside the carrier could disembark behind the vehicle without being exposed to enemy gunfire.
Pictured here is a marvelous 1:32 scale diecast replica of a Vietnam-era M113 Armored Personnel Carrier.
Length: 7 inches
Width: 3 inches