If you take the time to build a rifle you might as well use top notch parts instead of restocking old parts. Depending on what type of gun you build the parts will cost between $600 and $1200.
I keep this on file, this is the reality of gun building and the different levels you can choose from.
I hope you understand these "kits" offered by Track of the Wolf, Pecatonica River, Jim Chambers,Muzzleloader Builders Supply, etc are far from a easily built "kit". In fact, they could be more properly called a "box of rough parts".
Absolutely nothing will fit.
The only things that come close to being finished parts are the lock and the trigger. Even these parts require locating, drilling and threading the holes for the screws that hold the parts to the stock.
The barrel is not finished. It is rifled but the sight dovetails are not cut and on many of them the breechplug is not installed. This applies to the trigger guard, butt plate, side plate too. These are just rough, unfinished sand castings.
All of the parts will need to be inletted into the wooden stock. This applies to the barrel, lock, trigger guard, butt plate, side plate and ramrod thimbles.
Speaking of the stock, even it is just a moderately close roughed out blank which will require a LOT of wood removal to be close to the real longrifles.
Knowledge of metal and wood work is a definite requirement.
Plan on spending a minimum of 120 hours of your time to finish your gun. Actually, for a first build, a number like 180 hours would be closer if you want your gun to be something you can be proud of.
Kibler kits (about $1000) are a big step up from a parts kit, all the wood shaping (historically correct) is done by a CNC machine but the inlets are a little undersized so you have to fit the parts. The metal is rough castings so you have to do the finish work. All the holes are drilled for barrel lugs but you do have to install and drill the lugs for the barrel and lug holes for the trigger guard. The barrel will need to be draw filed and have the sights installed in the pre-cut dovetails. Your finished gun will be very period correct. Kibler is now making CNC machined locks that as perfect in function as any lock ever produced. Putting together a Kibler kit takes about 15 hours. Here is one I built, a Southern Mountain Rifle;
I'm not telling you all of this to discourage you. I just don't want to see anyone go into this with the idea that the gun will be ready for assembly.
Speaking of ready for assembly, Traditions, Lyman and Pedersoli offer kits that are easy to assemble and finish.
These are basically the same guns these companies sell but the parts don't have their finish sanding and finishing done.
These "Big Factory Kits" are indeed, true "kits" with all of the threaded holes located and finished.
They require something like 15-30 hours of your time to finish depending on whether you wish to make modifications like reshaping the stock or installing inlays or wire inlays.
