Got a hold of some pre ban USA mags. After inspection they seemed ok but I tried running some rounds through them and they just dont work how they should. Has anyone used the the top of a ruger factory 5 or 10 round mag to replace the thin aftermarket ones? It appears to be just a matter of...

Mini-14 magazines on hand: 2 ea Masen (?) 10 rnd w/ Ruger baseplates and followers 2 ea ProMag 20 rnd 3 ea Masen 20 rnd 1 ea stainless steel PMI (?) 30 rnd Wanted: Magazines for Glock 19 or 26 Magazines for AR15 My vision was to trade out the whole lot, but other options are on the table.