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Precision machined from forged 7075 T6 aluminum the CMMG Mk4 AR15 lower receiver is the quality mil-spec lower ready to be the foundation for your next build. The Mk4 stripped lower comes standard in a black hard coat anodized finish and can be assembled using any mil-spec Lower Parts Kit.
| Manufacturer | CMMG |
| UPC | 810097507173 |
| SKU | 55DA455-AB |
| Length | 199.9500 |
| Weight | 1.0000 |



FFL Required