So, I've bagged this idea for the time being, because using a drill press to finish them apparently isn't the way to go and I cannot afford even a cheap mill right now.

Whats worse, is that the federal government is apparently going to try and move towards putting a definition of "assault weapon" on the books, and all but ban the sale of "parts kits" and "unfinished lowers", and outright ban imported unfinished lowers. All of this is of course easy to change into an allout AWB later on by changing or removing a few words as a rider on another bill.

Read HB2910 and tell your House Rep to just say no:

http://amgoa.org/Proposed-Federal-Gun-Legislation-HB2910/Federal-Law/477