I just came across this. 80% lowers. Non-firearm. I just wanted to post this as I know some here may be interested in this sort of thing:
http://www.tacticalmachining.com/category.php?cid=22
Source, AR15.com poster
Tactical Machining $80 apiece.
(I've finished a few of them and they are the best out there for the money in my opinion)
You should be aware that the "definition" of "80%" changed a while back, so now all you have to do is mill the trigger/lug pocket, mill the trigger slot, and drill the trigger/hammer/selector holes.
No buffer tube tapping or aircraft extension drills required, etc.[/quote]
[url]http://www.ar15.com/forums/topic.html?b=3&f=118&t=507637