Just Google the design you want and go from there. Man It will be pleasant to at the least be able to get a 15 rounder or so. In terms of other compatible manufacturers, I'd use Mec-Gar also. Needs to be no issue getting them. I am hunting a Ruger https://andersonxccby.tribunablog.com/5-simple-techniques-for-ruger-sr45-for-sale-46528450