The BLR 81 are flush mounted detachable box magazines and are available in a capacity of 4+1 for magnum calibers and 5+1 for all standard calibers.
| Attribute | Value |
| Caliber | 300 WSM |
| Capacity | 3rd |
| Finish | Black |
| Model | OEM |
| Material | Steel |
| Type | Detachable |
| Model Fit | BLR 81 |
| Brand Fit | Browning |
| Capacity | 3rd |
| Manufacturer Part Number | 112026041 |
