M4 Carbine

The Colt LESOCOM, the closest thing to the military M4A1 a civilian can get?

Civilians: Get a Military Colt M4

Colt Defense is offering a new AR-style rifle — they call it the LESOCOM — to law enforcement and civilian shooters. And son of a gun if this thing isn't as close as possible in configuration to the M4A1 military carbine as anything you've ever seen.