Was loading my Sig 220 mags, all old style 7 rd zipperbacks, mag bodies, floor plates are identical.  Only difference is the follower.

Is one type better than the other?

Something to worry about?

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Did you buy both types of mags factory fresh?

It has been 20+ years but as I recall, the follower shown on the left in your bottom picture is what my mags had and while the follower on the right in your last pic looked like replacement followers I got from Shooting Star, which allowed one more round in the magazine.

I've posted some pics of the followers I'm talking about.

Note: hard to post from my phone... and I meant to put that first pic at the bottom with these others.


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I don't recall which type of follower came with the mags in the gun. I have 4 of one type, 6 of the other.   They worked well.   Could only get 7 rds in either type.  Accumulated the extra mags sometime in the 2000's.  

Just curious if the follower on left in last picture is factory or not.  Could just be a design change.  It's a West German P220

Id have to dig out my mags and take a look.

My gun is also a West German P220 and all mags I have were bought at around the same time I got the gun, which was in the early 90s as I recall.

I even have some MecGar mags (3 of which are pictured below), which all function 100%.

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OP, I have older P220 mags in both styles and I cannot tell any difference in function. I believe the flatter follower may be older but I'm not 100% sure.

I'm seeing both types when searching Sig 220 magazines, so the non flat one seems more common which probably means it's newer.
Thanks everyone