Well folks, I built my first gun in 1968, from $70 worth of parts from Dixie, using McCrory's book for instruction.
That first rifle did, kinda, sorta look like a rifle, but it shot real well; well enough to decimate the squirrel population, in this area, so it isn't all that hard to build a ML gun. The hard part is making it look like it's worth what you have in it.
Smartflix rents several DVDs on gunbuilding, including "Building the Jim Chambers Kit Rifles", blacksmithing, and other primitive skills.
http://smartflix.com/store/video/214/Building-the-Jim-Chambers-Kit-Rifles
I suggest renting the DVD to see if it's something you want to do. It really isn't all that hard for someone with good basic woodworking and metalworking skills.
Chambers kits are the best. Most of the hard work has been done, so don't become intimidated by Mike Brooks tutorial. Mike started from a stock blank. Chambers kits use precarve and preinlet stocks. There may be some refinement of the inlets, but it really isn't all that hard, for someone with good wood and metal working skills.
Check out the DVD and see if it's your cup of tea. If not, Brooks, or one of the other makers on the forum can build it for you.
God bless