Although I am sure I will end up buying an 80 jig when I have the extra cash, I like the idea of being able to rent one to do a couple if a user wanted to. The way to do it would be having someone send what the Jig was worth to the owner, and then upon completion the owner sends the cash back to the guy who rented it minus the fee. Wouldn't be that complicated either with PayPal gift and a 5-7 day turn around.
I don't really understand the whole law where you can't borrow friends tools to complete builds. That is just the craziest most unconstitutionalist thing I have ever heard. You can go to a buddies garage and use his mill to make any part for a vehicle that you want, or to make anything for that matter... but then if you use it to work on your gun it is illegal? They really stretch the laws sometimes but that one is a whole new level of stupid and I don't see how it could ever hold up if you got charged for using your buddies drill press or mill to work on your gun. I can understand having to do the work yourself on a 80% lower to make it yours, but that is different. A legal loophole here would be having your buddy sell you his milling machine for $5, and then after your done you decided to sell it back to him for what you had in it. Might be a little grey area there, but the law itself is too.