Colt M4 Carbine .22 LR Semi-Automatic Rifle with Firefield 2.5-10x Scope This pre-owned Colt M4 Carbine is a .22 LR semi-automatic rifle manufactured by Carl Walther under license from Colt and imported by Umarex. It features a 16.2-inch barrel, adjustable carbine stock, quad-rail handguard, fixed A2-style front sight, folding rear sight, and muzzle compensator. A Firefield 2.5-10x scope is mounted to the upper Picatinny rail. Specifications Manufacturer: Carl Walther Licensed Brand: Colt Model: M4 Carbine Caliber: .22 LR Action: Semi-Automatic Blowback Barrel Length: 16.2" Capacity: 30+1 Magazine: Detachable 30-Round Magazine Stock: Adjustable Carbine Stock Handguard: Quad-Rail Sights: Fixed Front and Folding Rear Optics Rail: Picatinny Optic: Firefield 2.5-10x Scope Muzzle Device: Compensator Finish: Black Included One 30-round magazine Firefield 2.5-10x scope with mount This rifle is pre-owned. Please review all photos carefully for its exact condition and included contents.