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The Colt LE6921CK Upper Receiver Assembly feature's Colt's upper receiver. In addition to an uninterrupted full-length front rail, this upper receiver allows for a free-floated barrel. 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.
Package Contents
- Colt LE6921CK Complete Upper Assembly
- Complete M4 Full Auto Bolt Carrier Assembly
- Charging Handle
- Fixed Post Front Sight
- Folding Rear Sight
- Manual
Specifications
- 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
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Reviews
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Great upper!
Very happy with it but be careful because whats pictured isn’t exactly what you get. The rear flip up sight is a Magpul.
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The (almost) GI M4 upper
really, all it lacks is a Matech rear sight, M203 front handguard ferrule cuts, and side sling swivel to be perfect. It comes now (apparently, and from everybody) with the MBuis and swivel installed to standard front mount and guard ferrule. Upper is now cage code marked rather than C marked, both receiver and barrel, M4 stamped at rail front. Front sight is F-height, although not marked, the guess being since all guns are flattop today, no need for marking. For those wanting to know lengths, the upper with supplied A2 flash hider is 15 7/8ths", which is SBR. The length with a Smith Ent. Vortex is 16 1/4", a gain of 3/8ths". This is still 1 1/4" shorter than the 16.1" with A2 length of 17 1/2" total length. That 1 1/4" DOES make a difference in handiness in tight quarters, even that 3/8ths" between the A2 and Vortex is palpable. I will leave it up to you to decide whether the SBR route is worth it.
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Free shipping?
Package arrived with 95 cents "postage due". Not a big deal, just annoying.
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Can't go wrong
Price, fit, Pony. What more do you want?
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pay pal
I would buy a lot more from you if stored my preferred method of payment or took PayPal. Midway gets a lot of my business because they make it so easy to check out. You guys have great stuff. Just make it easier for me to give you my money
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WOW, great upper.
Excellent upper. Just as described. Thank you
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Spare upper
Got this as a spare, first 1-7 twist. Good finish, nice BCG and price. Finished it off with a dust cover and assist.
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Colt upper
The upper looks ok, not as nice as the socom I bought last year but still a good deal. I haven't shot it yet but I did notice the upper was marked by the square, not a C to be found by me on the upper receiver but the barrel is properly marked.
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colt upper
Love the colt upper it was shipped very quickly too