If cost is a major factor you would be much better off to just buy a new utility rifle.
A used rifle would be even better.
I have looked at this a few times and unless you can do the work yourself, already own or have access to all the specialized tools, or just don't care about money, buying a new rifle wins out.
$0 of an NRA membership goes to legislative action or court battles. Not a dime. Only money contributed to the NRA-ILA or NRA-PVF.
Of course, you could just donate to the Second Amendment Foundation
I was feeling pretty good, then I looked around and realized I am not swimming or on fire.