This replacement or spare magazine is compatible with your Ruger 10/22. It is constructed of impact resistant polycarbonate with an injection molded mag follower and mag spring from heat treated stamp steel. Made in the USA.
Specifications:

Caliber	22 Winchester Magnum Rimfire (WMR)
Capacity	23
Finish	Smoke
Model	Ruger 10/22
Material	Polymer
Type	Detachable
Model Fit	10/22 Magnum
Brand Fit	Ruger
Max Capacity	23