TTSH,
Checked out the post link you provided. Very good info there and I think I have a very basic understanding, but where do the base plates fit into all of this. Are they time, serial or model specifc? I guess what I amm trying to figure out is could any of the factory mags be the ones that came with the pistol? How many mags were shipped with the pistols? The aftermarket mags are not a concern they just were a part of the deal.
Thanks for the reponse and the link.