RRA's are that heavy? Mine must be so "crisp" they just feel lighter than they are. I've got at least two, maybe three. No issues and sweet triggers.
I've also go a couple CMC's, a couple Giselle SSA-E's, another one I can't remember the name of and a few pretty standard GI type triggers.
Triggers are a "funny" thing. I thought the red one (red body, gold trigger and hammer) was a really light trigger. Other folks that shot it commented how nice it was. The other day I took that AR15 and my other 18" barreled AR15 to the range and side by side it was obvious the Giselle was way lighter. Way lighter. Can't tell you what either of them is on the gauge, but pulling the trigger shows the Giselle beats the heck out of the red one.
I know how to tell a bad trigger. When you get near the end of your shooting session and you realize your trigger finger is sore/tender from spending so much time with the trigger held at the "wall" waiting to break it and fire the shot. When it takes that much pressure to make it go bang, I don't need it.