Curious if anyone else has had trouble getting a RRA two stage trigger to work in an older DPMS lower? The trigger installs as it should, but will not work once pinned in place. I removed the selector switch and the trigger works, so then tried it with a few different selector switches but the trigger will not work with a selector switch in place. I also tried the trigger in a Colt and RRA lower, and it worked. Any idea what I can do to get it to work in the DPMS lower?
Thanks