The one that came with mine was fully functional, but the grip panels extended too far and it required slamming it into the gun as hard as I could to get it in, and most of the time it refused to drop without my pulling it out to help it. I sanded off a little of the panels and that solved the issue. The mag is marked with a T, for Tanfoglio. I got another magazine soon after I bought it, no markings on it at all, it fits and locks in fine, but doesn't hold open the slide. I can live with that. I have bought a couple of mags onlne and none of them have worked, so I'm interested in this thread.

I've had no problem finding mags for my fullsized "Mossad" and "Combat Cohai" Tanfoglio made guns.