Additional information
| UPC | 669185245837 |
|---|---|
| Manufacturer | Sons of Liberty Gun Works |
| Manufacturer Part Number | M4L89UPPER-13.7-556 |
| Product Type | Upper |
| Subcategory | Complete Upper Receivers |
| Model | L89 |
| Description | Low Profile Gas Block |
| Color | Black |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Barrel Type | Button-Rifled |
| Barrel Length | 13.7" Pinned (16" OAL) |
| Accessories | Flash Hider |
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