It should work with any AR15 ambidextrous safety.
I have had several customers bring me their AR10/15s after installing RA triggers because their safety no longer functioned properly. In every case when I measured the tang for the safety, it wasnt big enough. RA was great replacing the triggers and they really feel good they just need to iron out the safety issue.
I found that I had to install my ambidextrous safety in short-throw mode for it work properly.
have also replaced a RA trigger for safety issues. safety literally rotated freely 360. have not used new trigger yet.