Ruger's Mark III/IV and 22/45 1913 style Picatinny rail fits firearms with factory pre-drilled receivers. Included are three screws. This model does not fit the Mark I and Mark II pistols.
| Attribute | Value |
| Type | 1-Piece Base |
| Model | Picatinny Rail |
| Style | Picatinny |
| Finish | Hardcoat Anodized |
| Material | Aluminum |
| Pieces | 1 |
| Gun Type | Handgun |
| Mount Type | Screws |
| Rings Included | No |
| Manufacturer Part Number | 90623 |
