I got a catch from Wing tactical and will try it out when I get all the parts for the build. If it works I'll post a pic of it if not I'll try to indicate why it failed, and then try another brand. Looked at a lot of pic's on line of different catches and am trying to find the one that most closely replicates the picture of the PSA catch. With luck maybe one can be persuaded, with a little dremel work, to function.
If the one I have works on the bench then I'll get it to the range and give it a real world test then post the results.
MOW