I think I just figured something out, my tx. Mac 10 9mm uses the plastic zytel mags with the trapezoid shape that I hate. I thought after the ban someone would make a new steel mag (not) see my mac uses the single feed mag so at the gun show one day I pick up a mac 11 mag that has the same shape and take it home and check the fit low & behold I find I can cut a notch for the mag release and add a mag stop (weld wire on front) and I have a working metal mag. Now all I need to do is find more mags so I order some, damn they are not single feed so I send them back and try again this time I order some south African mac 11 mags they work great with the mods I did before and tweak the lips they run perfect no jams no misfeed I’m astatic try to order more and there out (sh*t) so I order some m11/pm11 steel mags at $9.99 each from cdnn and they are the same as the African mags & work great ! Now I might add that the whole time I have been on this quest I have talked to people at shows that have for sale tx. Macs I have emailed dealers before I order and they either don’t know what I’m talking about or they all swear that the gun will not take any other mags. Now I know that is not true and with a little modifications you will have a good running gun with metal mags why some one will not make them I don’t know cut a lower slot and add a stop and you have a mag that will work in both guns (I think I don’t own a mac11) Yes some of you out there did know this but it can’t be that many I mean some people are chopping off there lower mag well to get the fix. This thread is way to long and your eyes are bleeding so I’ll add my next discovery under this one:heavy