This replacement or spare magazine is compatible with your Ruger Mini-14. It is constructed of heat treated steel with injection molded mag follower and mag spring formed from chrome silicone wire. Made in the USA.
Specifications:

Caliber	223 Remington/5.56 NATO
Capacity	10
Finish	Nickel
Model	Ruger Mini-14
Material	Steel
Type	Detachable
Model Fit	Mini-14
Brand Fit	Ruger
Max Capacity	10