Armalite National Match Trigger assembly (hammer, trigger, disconnector, & springs)
This assembly came in my AR-10B anniversary edition from the factory. I have no rounds through the gun. So, the parts have only seen a little hand cycling.
Basically the parts are like new.
The MSRP is $180. Dealer cost is well over $100 for this set.
I am thinking of selling it for $100 shipped USPS priority mail in the CONUS
One reference is Frontline Armory. frontlinearmory.com. He can also be used as a free escrow service for the item.