A "commando" weapon, as well as a personal defense weapon platform, the CAR-15 was designed to be a compact package with high firepower to be issued to troops whose primary duties were not front-line combat. Commando's also chose the CAR-15 due to its compact size. It met with little success however, as several faults such as excessive muzzle flash and reduced accuracy dropped its overall effectiveness.
A shortened barrel M16A2, it is quite different similar to the M4 carbine. The CAR15 features automatic firing as well as making less noise, though the weapon does face a lesser accuracy due to the shortened barrel.
The CAR15 is one deadly rifle that is capable of clearing a room full of armed hostiles in one sweep of it's .223 beauty.