With this complete set of Super Thumbs, when it's time for going to practice pistols shooting you are all set. This ST4 model is compatible with Ruger 10/22 mags with extended capacites.
Specifications:
| Caliber | 22 Long Rifle (LR) |
| Capacity | Mag Loader |
| Finish | Black |
| Model | Super Thumb ST4 |
| Material | Polymer |
| Type | Magazine Loader |
| Model Fit | 10/22 Series |
| Brand Fit | Ruger |
| Max Capacity | 0 |