This extended replacement or spare magazine is compatible with your 1911 Government. 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	45 ACP
Capacity	15
Finish	Blued
Model	1911 Government
Material	Steel
Type	Detachable
Model Fit	1911 Government
Brand Fit
Max Capacity	15