Colt M4 Carbine MPS SKU: LE6920MPS-B The heart of this carbine is its 16.1 chrome-lined barrel. With a 1 in 7 twist ammunition selection is virtually unlimited. Colt teamed up with Magpul Industries to outfit this carbine with the most highly sought-after accessories. Magpul MOE SL handguards MOE SL carbine stock MOE SL pistol grip MOE vertical grip and a Magpul Back-up Sight all come as standard equipment on this exceptional carbine. Restrictions: California Colorado Connecticut Massachusetts Maryland New Jersey New York Vermont Colt M4 Carbine MPS Specs Action: Gas Operated Semi-Auto Caliber: 223 Remington/5.56 NATO Barrel Length: 16.1 Capacity: 30 1 Trigger: Standard Safety: Reversible Safety Selector OAL: 32-35.5 Weight: 6.9 lbs Stock: Magpul MOE SL Black Metal Finish: Black Muzzle: A2 Flash Hider Receiver Material: Aluminum Sights: A2 Front Magpul Rear Barrel Description: Chrome-Lined Twist: 1:7 Barrel Length Range: 16.00 to 17.99 Weight Range: 6.00 lbs to 6.99 lbs Purpose: Hunting/Target Series: Carbine Magpul Furniture Black