Description
| Manufacturer | Heckler and Koch (HK USA) |
| Model | MR556 A4 |
| Type | Rifle |
| Action | Semi-Auto |
| Family | MR556 Series |
| Special Option | Threaded Barrel |
| Finish | Black |
| Frame/Stock/Grips | Collapsible / Folding Stock HK416 Slimline Furniture |
| Barrel | 16.5″ |
| Overall Length | 33.25″ to 36.5″ |
| Capacity | 30 + 1 |
| # of magazines | 1 30 rd. |
| Sights | No Sights |
| Weight | 7.67 lbs. |
| Shipping Weight | 14.5 |
| AdditionalFeature | Short Stroke Gas Piston |
| AdditionalFeature | HK416 Upper Receiver |
| AdditionalFeature | M-LOK Handguard |
| MFG Model No | 81000827 |
| UPC | 642230269408 |
