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What exactly are you looking for there? I've got a couple of these on the way, and would rather know in advance if it's gonna cause issues.
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The 3rd picture, upper right hand corner of the mag body where the tab on the follower is sticking up behind. That cutout is supposed to be deeper. Compare it to your Ruger mag and you'll see what's wrong with it.
However, those followers aren't OE brand's as theirs are a light green. I don't know who's mag that is but it doesn't look like any OE brand I've seen. Do those have Ruger followers in them? If so, then I guess they are OE brand.
The issue I see with it is the cutout behind the feed lip isn't square but curves up to the left. All of my mags have a cutout that's got a square cut bottom (with a bit of a rounded courner to avoid cracking). All it looks like it needs is a bit of filing of the bottom to make it square. Take the follower and spring out and file it down a bit to square it up. Compare how deep you go to a mag that works. Then reassemble it and then add a couple of
dummy rds and insert it in your Mini, pull back the charging handle to make sure it doesn't engage the holdback. Then keep cycling it to make sure it does when the mag is empty.
It should be a simple fix