Bullfrog
Ultimate Member
...
I'm asking why no one makes aftermarket mags for this.
I believe someone makes a 15-round mag (pro-mag?).
Unfortunately, it's a single stack mag, and it feeds into the handgrip. So, you're stuck with a super-long single stack hanging out of the handgrip (like the hi-cap 1911 mags), or you'd have to figure out a way to modify the grip and magwell, and the original's wouldn't fit any more. 15 is workable, I guess, as a single stack, but that's about it.
Edit: here you go: