HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4
“Spikes STU5035S2S Complete Upper 5.56x45mm NATO 16″ Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12″ SAR3 Free-Floating Handguard for AR-15” has been added to your cart. View cart
| Weight | 9.025 lbs |
|---|---|
| Dimensions | 31 × 16 × 4 in |
| Manufacturer | HK |
| Caliber | 5.56mm |
| Compatibility | |
| Model | |
| Platform | |
| Product Type |
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