Colt 14.5 inch Monolithic Upper Receiver Assembly

$1,100.00 $950.00
(4 reviews)
Current Stock:

The Colt LE6944CK Monolithic Upper Receiver Assembly feature's Colt's new monolithic upper receiver. In addition to an uninterrupted full-length front rail, this upper receiver allows for a free-floated barrel. This LE6944CK Monolithic Upper Assembly also features a gas-block mounted front flip-up sight with bayonet lug and a Magpul flip-up backup rear sight. The barrel is Colt's standard 14.5" chrome lined M4 barrel with an A2 flash hider up front.


Package Contents

  • Colt LE6944CK Monolithic Complete Upper Assembly
  • Complete M4 Full Auto Bolt Carrier Assembly
  • Charging Handle
  • Folding Front & Rear Sights
  • Manual


  • 14.5 Inch 1/7 twist Mil-Spec chrome lined MP tested barrel
  • Unique direct gas operating system eliminates the conventional operating rod and results in fewer and lighter components
  • Accommodates the full range of 5.56mm ammunition, including the NATO M855/SS109 and U.S. M193, utilizing a rifling twist of 1 turn in 7"
  • Straight-line construction disperses recoil straight back to the shoulder, increasing handling capabilities, especially during repeated fire
  • Cartridge case deflector allows easy operation in both right and left handed shooting positions for increased tactical applications
  • Muzzle compensator further reduces muzzle climb and helps eliminate flash and dust signatures
  • Ejection port cover protects the chamber from dust and mud
  • Field strips easily without special tools for simple field user maintenance
  • Flat top receiver allows for removable carrying handle and easy mounting of accessories
  • High strength materials for greater comfort and effectiveness
  • Caliber - 5.56mm
  • Gas Direct system, Locking bolt
  • Front Sight - Adjustable front
  • Rear Sight - Target sight adjustable for windage and elevation
  • Flash Hider


  • 5
    Colt 14.5 monolithic upper

    Posted by MW on 8th Dec 2020

    AU comes in for the win as usual. I am always pleased with what I get from AU and will continue to order as they are great to deal with. They are my go to dealer for Colt products!!

  • 5
    Came off of a Factory 6944 SBR 2020

    Posted by Colt Fan on 7th Dec 2020

    These are take offs from the real deal 6944, uppers have the C mark, Bolt Carrier is also autopen marked C, the bolt is marked MPC also, genuine colt. I had mine pinned and welded to get to 16.1" legal length. NOTE: picture shows a matech sight, but the q4 2020 6944 guns are now shipping with magpul buis, this is also listed in their description here.

  • 5
    Colt 14.5 inch Monolithic Upper Receiver Assembly

    Posted by James T on 8th Dec 2019

    Daniel and his staff provide hard to get Colt products at a great price with awesome customer service!

  • 3
    Good product. Horrible packaging.

    Posted by Unknown on 26th Apr 2017

    I am very pleased with the product. The packaging, however, was not good. The upper came in the box for the whole rifle. It was not held secure and slid around in the box. Will not be ordering from this site again.