Colt's Manufacturing M4 Carbine, Semi-automatic Rifle, AR,.223 Remington/556NATO, 16.1 Barrel, Matte Finish, Black, A2 Pistol Grip, Flash Hider, A2 Front Sight, No Handguard, No Stock LE6920-OEM1 The Colt LE6920 Colt's AR-15 5.56 cal comes with no furniture making it yours to customize. This AR-15 platform carbine has a direct gas system with locking bolt. It features a 16.1 chrome-lined barrel with six grooves and a 1:7 right hand twist. It's pistol grip with a matte black finish and adjustable for elevation post front sight. This model has no furniture and is ready to customize with your drop-in handguard or rail system buttstock and rear buttstock and rear sight optic.