Police Trade In Colt M4 Carbine LE6920 5.56 NATO w/ Magpul Furniture Manufacturer: Colt Model: M4 Carbine Condition: Grade 3 Caliber/Gauge: 5.56 NATO Action: Semi-Auto Barrel Length: 16" Capacity: Magazine not included Sights: MAGPUL Flip-up rear sight Finish: Black Other Features: MAGPUL furniture; MOE SL 9" polymer handguard with M-LOK & QD mounts, adjustable MOE SL stock, MOE pistol grip. S/N: *****209 * This item is a Police Trade-In. * Please be aware that we have not test-fired this firearm. Unless stated otherwise, expect this firearm to fire and function safely.