Free: Contests & Raffles.
I have a CMC Trigger in my AR and I love it. I think it's the 3.5# version.
I'm in the same boat, I have a beautiful custom AR with a BTE Competition trigger in it. While it breaks like glass and I can shoot sub 1/2" groups with it at 3.5# it just feels too heavy to me as I'm used to target triggers on bolt guns. A good friend suggested a JARD trigger and I'm going to go that way when I get a break to get some things done.