[Guest]

I just got a new mag today, but it functions a little bit differently than the one I've been using. With 11 rounds in it, it is hard to insert and also doesn't come out easily when the mag release is pressed. With 10 rounds, it acts like the old mag. It is an 11-round model.
My original mag almost shoots itself out when the release is pressed.
There are a couple of visual differences - the new follower is blue rather than black, and the base pad is black where as the old one is red.
Do new mags normally require any sort of break-in?

 

[shortranger]

Yup. This is common to magazines of all types. After a few loadings and unloadings the mag spring will lose enough of its tension to function like your old mag does.

David

 

[L-M_P]

I've been told by numerous people that if you load the mag fully and then leave it set for a week or two, it should "break in" according to them.

Try it, it can't do any harm.

 

[Boats]

They are individuals. My competition pistols use a label maker and number the mags. That way I can tell which one is the offender if any problems develop. Have some that will never load to capacity even though bought at the same time same lot. Not a bad idea to open them up and look inside, most need cleaning some. You can also re-spring mags to good advantage if they are not working well. If the feed lips are a problem best throw them away.

Boats