Colt Firearms LE6933 Complete Upper Features The Colt Firearms LE6933 complete upper is built around an 11.5 chrome-lined barrel chambered in 5.56 / .223 Rem a combination that resists heat and fouling for extended strings of fire while keeping the barrel s bore protected over years of use. The threaded muzzle accepts the included Surefire SF3 flash hider which suppresses visible signature and recoil impulse so the shooter can stay on target through rapid fire. An anodized matte black finish covers the receiver for abrasion resistance and a low-maintenance duty-ready appearance. The upper mounts directly to any mil-spec AR-15 lower receiver giving a straightforward path to a complete carbine build without hunting down a barrel gas system and muzzle device separately. A Radian Raptor charging handle is included for smoother more positive manipulation than a standard mil-spec handle reducing the chance of a short-stroke under stress and making the handle easier to grab with gloved hands or under a mounted optic. Colt s reputation for chrome-lined barrels and mil-spec tolerances carries through this conversion kit giving builders a drop-in option backed by decades of military and law enforcement pedigree. The 11.5 barrel length keeps the overall carbine short and maneuverable well suited to close-quarters and home-defense applications where overall length and quick handling matter more than long-range reach. Because every major wear component the barrel flash hider and charging handle is already matched and installed the upper removes most of the guesswork and compatibility risk that comes with assembling a short-barrel build from individual parts. Together the chrome-lined barrel flash hider and upgraded charging handle make the LE6933 a complete ready-to-run upper for any AR-15 lower. Colt Firearms LE6933 Complete Upper Specifications Manufacturer: Colt Firearms Model: LE6933 Complete Upper Caliber: 5.56 / .223 Rem Barrel Length: 11.5 Barrel Material: Chrome Lined Steel Muzzle Device: Surefire SF3 Flash Hider Receiver Finish: Anodized Matte Black Compatible Hosts: AR-15 Lower Receivers Charging Handle: Radian Raptor Color: Black Available At: GrabAGun