Colt's Manufacturing Company re-introduces the renowned Sporter line of firearms with all the features you would want on a modern rifle. Modeled after the Colt M4 carbine supplied to the U.S. Government, the Sporter has a 4-position collapsible buttstock, 16" chrome lined barrel and a flat top upper receiver with a removable carry handle. This one-piece upper incorporates a continuous Mil-Spec M1913 rail from the rear of the upper receiver to the folding front sight, allowing for endless optic, laser and light combinations. The Sporter uses a direct gas system with a locking bolt. The rifle has an post front sight that's adjustable for elevation and a rear sight that's adjustable for height and elevation. Other features include a flat top receiver with a removable carry handle and a combination bayonet lug and flash hider. 1-7" right-handed twist. 20-round magazine.