This replacement or spare magazine is compatible with your Ruger SR, SRc, 9E. Made in the USA. NOTE: It is not compatible with the Security-9 pistol.
Specifications:

Caliber	9mm Luger
Capacity	17
Finish	Blued
Model	SR9/SR9c
Material	Steel
Type	Detachable
Model Fit	SR9/SR9C
Brand Fit	Ruger
Max Capacity	17