This replacement or spare magazine is compatible with your Ruger 10/22, Charger. It is constructed of impact resistant polycarbonate with injection molded mag follower and mag spring formed from chrome silicone wire. Made in the USA. Type Detachable Model Ruger 10/22 Finish Smoke Series Replacement Magazine Caliber 22 LR Capacity 25 Material Polycarbonate Brand Fit Ruger Model Fit 10/22