The Colt M4 LE6940 Upper Group 16in Stripped brings Colt’s proven monolithic AR-15 upper design to shooters who want a rigid, one-piece receiver and rail system. This complete upper receiver group features a 16-inch chrome-lined barrel with a carbine-length gas system, integrated Picatinny top rail, and a built-in flip-up front sight that folds neatly out of the way when using optics.

This stripped configuration ships without a bolt carrier group, charging handle, or backup sights, making it a solid foundation for a custom build or an upgrade to an existing lower. Chambered in 5.56x45 NATO with a 1-7 twist, it is well suited for training, range work, and general-purpose use where reliability and consistency matter. The rigid monolithic construction and free-floated barrel reflect Colt’s long-standing reputation for dependable, duty-ready craftsmanship.

• Manufacturer: Colt
• Model: M4 LE6940 Upper Group 16in Stripped
• Caliber: 5.56x45 NATO
• Barrel Length: 16.00"
• Gas System Length: Carbine
• Twist: 1-7
• Receiver Style: Stripped Monolithic Upper