If you want to build a cows foot FDC the closests parts you can probably get would be the TOW 44"barrel "TULLE" parts set the .66 barrel will bring it at a reasonable weight and a different lock, or modification of the Davis Tulle lock would be in order the last still to short, have to settle for American Walnut and add the 16 flats at the wedding ring, this is the closest parts set available and toss the plans that come with it and use Bouchards or other references Alex has built about the best one I have seen if looking for a builder, not sure where he gets his parts.No kits or completed guns from any of the regular vendors are very close to the originals, I did one in from TOW .58 44" barrel that is just under 8lb due to barrel profile and modified the Davis lock, not a copy of the real thing but closer than what the rest of the competition offeres as kits or complete guns.