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Expertly crafted from aircraft grade aluminum CMMG® Mk4/AR15 upper receiver assemblies come with our ZEROED® Polymer Dust Cover pre-installed. This upper receiver omits the forward assist for those looking for a sleek and stylish base to start a new AR15 build.
| UPC | 810097506329 |
|---|---|
| Manufacturer | CMMG |
| Manufacturer Part Number | 55BA290-AB |
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