No, it was all of them up until (fairly?) recently. The way to tell is to look down into the magwell with the slide off. If you see a shiny paperclip holding the mag catch in place, that's the hunk-a-junk in question. The new one is a flat double-forked leaf spring made of stamped steel that's been blackened. It is impossible for a bullet tip to snag on the new spring.
It was kinda funny, actually. The old spring was literally
the cheapest/simplest looking part in the gun (looks exactly like a bent paperclip), and didn't even feel springy when I pulled it out. I think it was a job they figured was idiot-proof and they had the intern design it. The new part is more appropriate for the over-designed nature pervading the rest of the firearm
And no I dont reload the 5.7x28mm round, too much work.
"You should be heh-py you have ammo to shoot at all nowadays. Why, back in August 2012, we couldn't even get