Last night I ordered two triggers from ADCO.  One is the ADCO improved RRA NM trigger, and the other is a Gissele SSA.  I have 2 DPMS .308 rifles.  One is a 308T, which has a heavy 16" barrel and would seem more appropriate for long range, and the other is an AP4.  The SSA has 2.5/2 pound pull and the RRA is rated at 4.5/5 pounds.  My thoughts run to putting the SSA in the AP4 and the RRA in the 308T.  Any reasons that I might want to change that?
And I have to say that ADCO rules.  I ordered yesterday, and they may be delivered today, tommorow for sure!

I put an Adco RRA 2 stage in my AP4 & LOVE it. I've read that some people have problems with the hammer spring being too light, but haven't run into that. I'm considering the installation of a Wolf increased power spring as insurance.

Both are great triggers, but the Gisselle is commonly thought of as the best ar trigger around currently, so I'd put that in which ever rifle you need the smallest groups.