The Colt M4 LE6945 Upper Group 10.3in With BCG And Sights is a complete monolithic upper receiver assembly designed to drop onto your AR-15 lower and deliver Colt’s proven M4 performance. Built around a rigid one-piece upper with a full-length Picatinny top rail, it provides solid mounting for optics and accessories while keeping the 10.3 inch 5.56x45 NATO barrel completely free floated for consistent accuracy.

This upper includes a bolt carrier group and integral flip-up front sight that pairs with standard-height rear sights, giving you a ready-to-run solution once installed on a compatible lower. The carbine-length gas system, 1:7 twist barrel, and matte black finish make it well suited for range use, training, and general-purpose shooting where compact handling is preferred. Backed by Colt’s long history of building dependable AR platforms, this upper group reflects careful machining and attention to detail.

Key Features:

• Manufacturer: Colt
• Model: M4 LE6945 Upper Group 10.3in With BCG And Sights
• Caliber: 5.56x45 NATO
• Condition: New
• Barrel Length: 10.3 Inches
• Gas System Length: Carbine
• Receiver Style: Complete Monolithic Upper With Full-Length Picatinny Rail
• Included Components: Bolt Carrier Group And Flip-Up Front Sight