The Colt LE6920 M4A1 5.56 NATO SOCOM Carbine is a reproduction of the U.S. Military classic. It features a marked lower receiver with PROPERTY OF THE US GOVT, M4A1 CARBINE, and CAL 5.56MM that closely resembles the original. The true SOCOM 14.5 heavy barrel is chrome lined with M203 flats under a Knights Armament Rail system. A pinned and welded extended flash hider adds to the barrel for a non-NFA length of 16.1 inches. Other features include a side sling swivel and an ambidextrous safety selector. Features:223 Remington/5.56 NATOGas-operated semi-auto16.1" chrome-lined, SOCOM heavy profile barrel1:7 twist30+1 round capacityStandard triggerAmbidextrous safety selector4-position collapsible stockExt A2 flash hiderA2 front sight, Matech folding rear sight35.5" OAL6.95 lbs