Colt LE6921 w/ Colt Canada Lower - 5.56 NATO, 14.5"
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Colt LE6921 with Colt Canada Premium Lower

Upper Receiver Specifications

The Colt LE6921CK Upper Receiver Assembly feature's Colt's upper receiver. This LE6921CK Upper Assembly also features a gas-block mounted fixed front sight post with bayonet lug and a flip-up backup rear sight. The barrel is Colt's standard 14.5" chrome lined M4 barrel with an A2 flash hider up front.


- 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
- Lower Receiver Specifications

Colt Canada Diemaco Premium Complete Lower

This is a complete AR-15 lower 100% produced in the Colt Canada Diemaco factory with 100% Colt Canada parts. This is the same lower used on the Colt Canada SA15.7's and the SA20's, the civilian equivalents of the Canadian Forces' C7 and C8 rifles. This lower features an ambidextrous sling plate, ambidextrous magazine release, and ambidextrous safety.

This complete lower comes with a full Colt lower parts kit installed as well as a 6-position collapsing buttstock with non-slip rubber butt pad on a Mil-Spec buffer tube. The receiver has the maple leaf and the authentic Colt Canada Diemaco logo roll marked into it.

This lower is complete and ready to accept any Mil-Spec AR-15 upper.

This lower has green furniture.


Caliber: 5.56 NATO
Capacity: 5 (AR Magazines)
Action: Semi-Automatic
Operating System: Direct Impingement
Stock: 6-Position, Telescopic, Colt Canada Green Buttstock
Sights: Magpul Rear, Fixed Front
Barrel: 14.5" Milspec Chrome Lined, MP Tested
Twist: 1:7
Safety: Manual Thumb Fire Control
Overall Length: 31"
Weight: 6.2 lbs.

***This rifle does not comes with a box or magazine.

This is a Restricted Firearm.