- Upper Receiver Type: A3Flat-Top
- Barrel Length: 16″
- Barrel Contour: M4
- Barrel Material: Chrome Moly
- Muzzle Thread Pattern: 1/2″-28
- Chrome Lined: Yes
- Barrel Finish: Matte
- Twist Rate: 1 in 7″
- Chamber: 5.56x45mm
- M4 Feed Ramps: Yes
- Muzzle Device: A2 Flash Hider
- Gas System Length: Carbine
- Gas Block Diameter: 0.750″
- Handguard: NONE
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: Mil-Spec
| Barrel Length | 16 |
|---|---|
| Caliber | 5.56 |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Colt Firearms |
| Manufacturer Part Number | LE6920CK-NHG |
| Model | Upper Kit |
| Type | Uppers |
| UPC | 098289035394 |




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