It's obvious that finishing one of these involves quite a bit of work, and can easily be screwed up. From what I've seen, the 80% lowers are not much cheaper than fully finished units (comparing The Tannery Shop with Essential Arms prices). So is there any significant advantage to these 80%ers other than lack of any 4473 paperwork? (moot point for me since I've already got 5 lowers with 4473 records). Thanks for input.

the sense of pride in building it yourself