Welcome to the group....
Building your own is all fun and good until that detent and spring decided to launch across the room never to be seen until it is run over by the vacuum cleaner.
It only takes a few real simple tools for the lower to be built, a bit more for the upper if you want to do the job right.
I was up to your neck of the woods (Florence) a few weeks ago just to put a few long distance miles on my truck...wonderful drive while the weather is good and the traffic was light.