have a receiver that needs the FCG pockets machined, trigger pin, hammer pin and safety holes drilled. First step will be making a mill/drill jig to hold the receiver. My receiver is a machined billet version and is a little different from the typical forging. Need to at least make the jig fit my receiver and possibly figure it out to work with forgings. My CNC mill is an older unit and does not have a tool changer (requires manual tool changes). Will need to program the machine operations. Ultimately want to cut an entire receiver (for no other reason than....cuz I can).
I know this is an older post, but I live just down the road from you in Emerson, Ne. I would be very interested in meeting up and cutting a lower from a block of aluminum. I don't have a ton of machining experience, but I did go to community college a few years ago to become a machinist. Turned out it really wasn't for me (as a career anyway), but I am pretty good at drawing up plans on Solid-Works and several other CAD programs. I'd be willing to pay for the supplies to do a couple lowers if you wanted to give it a go.
I have put together a bunch of lowers, and even did an 80% with my friend using a jig bought from Brownells (we used a 2hp drill press and it turned out great). Think it would be pretty cool to get some guys together and give it a whirl.