I have been on a "Rifle Shoppe" kick for the last 5 years, and the only real gripe was some walnut issues.
There is nothing worse than "light" walnut, meaning new growth, not dense, big pores, lightweight blanks, I want it old growth and heavy with tight, tight grain. I got some wood from them that was just too "light" for it's intended purpose in my opinion.
Other than that, the casting quality has been great..............but it is not for beginners.
The screws and such provided are basically hardware store bits, and you 'gotta make your own to be authentic as reasonably possible, and you will also have to know how to make springs. Most of these really old school builds use super heavy (thick) springs, and they are much more difficult to get right then let's say a Siler frizzen spring.
Build a TOTW (etc.) kit, and then you will have an idea whether you want to tackle a Rifle Shoppe offering!