Anyone made an AR from an 80% finished

lower? Finishing one takes access to a drill press, $100 worth of drill guide blocks (readily sold for $70 after you are done) some fairly low cost drill bits, and then access to a lathe, with a fairly simple to make jig that holds it while you finish-bore and thread the "tower" that holds the buttstock onto the lower. About 2 hour's work, once you have that jig, but making the lathe jig will take an hour or more.