If you don't want to send your parts to a smith you can buy a duty trigger setup from Bill Springfield at
Triggerwork.net for $85. Trigger jobs is his specialty and that's what he does for a living. He will make one built more toward a duty trigger than what you see on his site, more like 4.5 lbs, if you tell him that's what it's for. He makes minor adjustments to stock AR15 trigger parts, so if you have a problem you can put a standard backup until you can get it like it was. I doubt you'll have a problem, just pointing out that you can fix it quick if needed.
TS