Overview
The Colt IAR6940CK Complete Upper Receiver Assembly is the full-length IAR variant built to compete in the M27 Infantry Automatic Rifle contract.
It features a monolithic upper receiver with an uninterrupted full-length top rail that free-floats Colt's heavy 16.1" chrome-lined IAR barrel.
Features
- Monolithic upper receiver with full-length top rail
- Free-floated heavy 16.1" chrome-lined barrel
- Gas block mounted front sight post
- Backup rear sight
- Integrated heat sink for better heat control during sustained fire
- A2 flash hider
- Full auto bolt carrier group
Recommended for use with an H2 or H3 buffer.
Specifications
| Caliber | .223/5.56 |
| Barrel Length | 16.1" (heavy profile, chrome-lined) |
| Receiver | Monolithic with continuous top rail |
| Sights | Front (gas block mounted) + backup rear |
| Muzzle Device | A2 flash hider |
| Bolt Carrier Group | Full auto |
| SKU | IAR6940CK (previous part number: SP403459) |