The factory triggers can actually be made pretty decent. A light polishing of the internals, and about one coil taken off the main spring will make the trigger a lot nicer. In addition you can drill and tap the trigger guard for an over travel screw, then you'll have a trigger as good as most bolt guns.
I sent 2 of mine to Dennis(Guntech on here) and he polished/altered the sears and actually replaced the spring w/ an identical spring but lighter coils(easier to compress)
Both of them came back at about 3lbs, absolutely fantastic!
And the price cannot be beat IMO!!! Very Happy Camper!