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| UPC | 642230270220 |
|---|---|
| Manufacturer | Heckler & Koch / H&K |
| Manufacturer Part Number | 51000385 |
| Barrel Finish | STAINLESS |
| Barrel Length | 11.5 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Length | 31.1000 |
| Model | MR556 A4 Upper Receiver |
| Product Type | Upper |
| Package Height | 4.0 |
| Package Width | 13.0 |
| Rate of Twist | 1-in-7" |
| Shipping Weight | 8.8 |
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