I don't have any Glocks either but decided to go that way for magazines, though I went with the Magpul mags.
https://magpul.com/firearm-accessories/pmags/glock.html


I ordered 3 -17 round mags, and wanted to try the little 10 round one, but it was out of stock, so I ended up getting a 12 round one. The thought was that a shorter one would be a bit better to carry around in the woods.

The springs in these magazines are stiff! I've since ordered a maglula gadget that should be delivered today.

The magwell insert was an easy switch, and all of the mags worked perfectly.

I had some water jugs in the garage that I've been tripping over for a couple of months now, so decided to catch some bullets in them, fired from the PCC.

[Linked Image from i.postimg.cc]

Think.
It's not illegal, yet.