Additional information
| Barrel length | 16.5 inches |
|---|---|
| Finish | Anodized |
| Fit | Ar-15 |
| Caliber | 5.56 NATO |
| Manufacturer | Heckler & koch |
| Model | Mr556a4 upper receiver |
| Product type | Upper receiver kit |
| Sub category | Complete upper receivers |
| Color | Black |
| Weight ounces | 11.95 |
| Length inches | 43.50 |
| Width inches | 13.50 |
| Height inches | 0.40 |
| Hazard ground | 2025-03-12t00:00:00z |
