"Mark IV, Mark III, Mark II, & 22/45 Weaver-style scope base adapter. DOES NOT FIT RUGER SCOPE RINGS. Genuine Ruger Factory Accessory"
| UPC | 736676902286 |
| Brand | RUGER |
| Fit | Ruger MK I/MK II/MK III |
| Manufacturer | Ruger |
| Manufacturer Part # | 90228 |
| Type | 1 Piece Base |
| Subcategory | Bases |
| Color | Black |