well as you know i do own and carry a springfield hi cap, embel frame SA upper with wilson internals, enough about that. If they do not make them anymore, try para ord, about the same gun , i use para ord hi cap mags with the sa. Gotta be some good used ones out there ,sooner or later you will find what you want, I am old school , the armors that trained me ,taught me fit was everything ,loose bushing ment shooting in the general direction, tight bushing ,fitted and you hit your target, since the 1911's hit the big 100, seems everybody is making one. I have had the younger shooters bringing me more parts ,that they must be paying more than they did for the pistol,but it;s their money.Only the one doing the shooting can decide what is best for them. I had old hardcore armors school me,then i got old and took on their ways.I am not closed minded, but i just know what works. or what works for me. there is a saying "you pays your money and takes your chance"
padre