The Colt LE6920 is a semi-automatic rifle chambered in 5.56x45mm. Similar to the battle tested M4 the LE6920 features adjustable front and rear sights. The butt stock has four-positions and the barrel is 16.1 in length and chrome lined. A picatinny rail allows for the attachment of optics. Details Action Semi-automatic - Caliber 5.56mm - Barrel Length 16.1 - Overall Length 32 - Weight 5.4 lbs. - FinishColor AnodizedBlack - GripsStock Pistol Grip - Twist 17 - Throughout the world today Colts reliability performance and accuracy provide our Armed Forces the confidence required to accomplish any mission. Colts new LE6920MPS-B shares many features of its combat proven brother the Colt M4. The heart of this new 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. Does not include furniture.