The term clip has been used interchangeably with “magazine” for the detachable magazines used in guns for about a hundred years.
It is only the last 20 that people have become oversensitive to it.
Styles and usage change. Today, clip is not considered correct and magazine is the dominant usage. But using clip interchangeably with a detachable magazine has a long history.
Thank you. There's few people more annoying than the pedantic gun terminology nazi! 99% of America thinks clips hold bullets and magazines are things you read.
Hell, I call them clips just to piss people off. "IT'S NOT A CLIP!!! IT'S A MAGAZEEEEEEEEN!!!!!! GURGLE GURGLE HACK GURGLE COUGH!!!!""