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Mfg Item #: 81000584
HK MR556 UPPER RECEIVER KIT 16.5" MEDIUM CONTOUR M-LOK
| Width | 13.5500 |
|---|---|
| Height | 4.6000 |
| Length | 44.1500 |
| Caliber | 223556 nato |
| Dimension | 4.60 X 13.55 X 44.15 |
| Barrel Finish | MATTE BLACK |
| Rate Of Twist | 1:7" |
| Other Features | INCLUDES BCG, BUFFER AND BUFFER SPRING |
| Barrel Material | STEEL |
| Barrel Length In Inches | 16.5 |