The Colt M4 LE6940 Upper Group 16in With BCG And Sights brings Colt’s proven monolithic AR-15 design to shooters who want a complete, ready-to-install upper receiver assembly. The one-piece upper and free-floating 16" chrome-lined barrel work together to provide a rigid platform, consistent accuracy, and reliable performance with 5.56x45mm NATO ammunition. A full-length Picatinny rail and included flip-up sights give you flexible options for optics and backups right out of the box.

This complete upper is ideal for building or upgrading an AR-15 for range use, training, or general-purpose duty where dependable function and straightforward handling matter. The carbine-length gas system, M4 contour barrel, and A2 flash hider deliver familiar balance and recoil characteristics, while the integrated monolithic handguard keeps accessories aligned on a single plane. Colt’s long-standing reputation for quality manufacturing and thoughtful engineering is evident in every detail of the LE6940 upper group.

Key Features:

• Manufacturer: Colt
• Model: M4 LE6940 Upper Group 16in With BCG And Sights
• Caliber: 5.56x45mm NATO
• Barrel Length: 16"
• Gas System Length: Carbine
• Style: Monolithic Free-Floating Upper Receiver Group
• Sights: Flip-Up Front And Rear
• Threads: 1/2"-28
• Muzzle Device: A2 Flash Hider
• Upper Receiver Type: A3 Flat-Top
• Bolt Carrier Assembly Included: Yes