Colt M4 5.56mm 10.3" Complete Upper Receiver with Folding Front Sight & Rail Handguard

Description: Colt M4 5.56mm 10.3" Complete Upper Receiver with Folding Front Sight & Rail Handguard. This is a factory original Colt part. Colt has been known throughout history for producing the highest quality parts and firearms. And Colt offers the best in traditional and new manufacturing techniques, to bring the customer the best possible parts and accessories.

This complete upper is ready to mount to a complete lower receiver and includes a charging handle and a complete bolt carrier group with a properly head-spaced bolt. Other features of the upper assembly include chrome-lined bolt carrier and barrel, with 1/7 right hand twist barrel rifling. Each of the upper assemblies also comes with a back-up sights.

• Patented, one-piece monolithic upper receiver
• Continuous Mil-Spec rail from the rear of the upper receiver to the front sight
• Free floating barrel
• Caliber - 5.56x45 NATO (.223 Rem.)
• Barrel Length - 10.3 in. (26.26 cm)
• Rifling - 1/7 RH

Manufacturer: Colt Manufacturing

Note: This upper is for use on an AR Pistol or for NFA registered firearms ONLY.  It is the responsibility of the purchaser to ensure this upper is being used in a lawful manner.