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Mfg Item #: 81000584
MR556A1 UPPER RECEIVER 5.56MM
| Barrel | 16.5" |
|---|---|
| Finish | Matte Black |
| Caliber | 5.56 x 45mm |
| Rate Of Twist | 1-in-7" |
| Additional Feature 1 | Includes Bolt and Buffer |
| Additional Feature 2 | M-Lok Handguard |
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