The Colt LE6921 Upper Receiver 14.5" Barrel With BCG & Charging Handle gives builders a proven M4-pattern foundation straight from Colt. This complete upper arrives without handguards, letting you choose the rail or guards that best fit your setup while still benefiting from Colt’s factory-assembled receiver, barrel, bolt carrier group, and charging handle.

This upper is chambered in 5.56 NATO and uses a 14.5" button-rifled barrel with a 1:7" twist to stabilize a wide range of bullet weights. The muzzle is threaded 1/2"-28 for use with standard flash hiders, brakes, or suppressor mounts, and the low-profile gas block is designed to clear most free-float handguards. Ideal for range use, training, and general-purpose carbine builds, it offers a straightforward path to a reliable AR-15 upper backed by Colt’s long-standing reputation for quality and consistency.

Key Features:

• Manufacturer: Colt
• Model: LE6921 Upper Receiver 14.5" Barrel W/ BCG & Charging Handle
• Caliber: 5.56 NATO
• Barrel Length: 14.5"
• Twist Rate: 1:7"
• Muzzle Threads: 1/2"-28
• Gas Block: Low Profile
• Included Components: Upper Receiver, Barrel, Bolt Carrier Group, Charging Handle
• Handguards: Not Included