I just started to build a full stock Hawken flint in .50. Most of the parts I got from Pecatonica but I got some other parts from Track and MLBS. I got the barrel, lock and trigger sets in but I broke the tang trying to cold form it so I ordered another one so I am waiting for that to come in. For me the big issue is forming the tang. Taylor suggested to use the three point bending method and it worked well for the trigger plate. I think I will try that on the new tang but I will resort to using heat to bend it to shape if I can't get it right.
As far as gathering parts, I have gotten parts from RE Davis, L & R, MLBS, and a component set from Pecontonica. When I get done with this rifle I will probably do another full stock Hawken, maybe a squirrel rifle from Don's sets.
Rob