I have the ultime in my 9c and 9- had to send the 9 to Ruger, they took it out- replaced with whole new trigger. The new trigger was- awful. Just plain awful- sompared to what I sent them and to my 9c. So just had my ultimate reinstalled. Even with the other new triogger parts it is so much better.
I'm not saying the SR triggers are bad- but compared to after the new parts? world of diff.