UPDATE
Well, I got the Hiperfire EDT Designated Marksman trigger, finally got the time to install it and....will probably be the LAST hiperfire I buy. It feels like crap, the stainless Anderson fire control group that came out has much better feel and break than this Hiperfire that cost 3-times a much. Just an FYi, Hiperfire's not the company it used to be. My first one years ago (when they were still called EDT1) was GREAT ! The Heavy Gunner I bought a couple of years ago was iffy, didn't feel great but I thought was just dumb luck I got a gritty one. This one...is gritty, and has way too much creep for a Hiperfire. Now I'm thinking I should have risked it and bought the CMC instead.
In the mean time....a friend of mine bought a LaRue two-stage trigger for his AR and that thing is fantastic !! I wish they made a single stage that was as good !!