This 5.56 NATO build kit includes a Mil-Spec 7075 billet flat top upper receiver, a 13″ Tactical QD rail assembly, and barrel nut. It is black hard coat anodized.
| Caliber | 5.56 |
|---|---|
| Condition | New in Box |
| Manufacturer Part Number | U556KIT |
| Type | Uppers |
| UPC | 859616003147 |
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