80% lowers

[Dalendenver]

Does anyone know of a machine shop in the Denver metro area that has a CNC milling machine with a program to finish an 80% lower? Also what they charge?

[theGinsue]

Of course, you mean "Also what they charge to let me use the equipment to complete the lower​?"

[jerrymrc]

Of course, you mean "Also what they charge to let me use the equipment to complete the lower​?"

Yep. This just hurts so much. OK, so you want a 80% receiver because it is NOT a firearm right? So YOU buy this "non firearm" and YOU are welcome to complete it. IF a shop had a program to complete the receiver then they would be the MFG and have to have a 07 FFL because they just became the MFG by completing it. Then it requires a ser # and you would have to do a 4473 to get it back because you are now receiving a firearm.

Hope this helps.[Bang][Flower]

[jerrymrc]

80% lowers are for guys how have a harbor freight mill in their house. Got's one of those.[Flower]

[10mm-man]

If you got an 80% all you need is the jig and a drill press. Google- 80% lower jig..... It will help you finish the trigger well.

[spyder]

If you got an 80% all you need is the jig and a drill press. Google- 80% lower jig..... It will help you finish the trigger well.
This is pretty much your only option unless you want to pay a shop that already has an FFL to complete the receiver for you, in which they will have to put their name, and a serial number on it also, and then sell it to you.... You might as well just go buy a cheap receiver from someone if you are going to go this route. It looks like you should have put a little more thought into your purchase. 80 percenters are for people who will complete the receiver themselves, otherwise, you should have just spend another $40 and got a regular lower.

[Irving]

Is it generally better/easier to finish the lower using a mill if you have one?

[spyder]

Is it generally better/easier to finish the lower using a mill if you have one?
Yes, a horizontal mill....

[Roger Ronas]

Yes, a horizontal mill....

Why a horizontal over a vertical milling machine?

Roger

[Shootersfab]

I would suggest opening up the pocket with an oxy/acytylene torch, then finishing it out with a closed coat 9" grinder....this achieves the best, most precise results..
[Beer]

[blacklabel]

All you need is a dremel, some duct tape and a 12 pack.

[skullybones]

Why a horizontal over a vertical milling machine? Roger
More parts at one time?

[spyder]

Why a horizontal over a vertical milling machine?

Roger
Um... it was a joke....

[Great-Kazoo]

Um... it was a joke....

Tough crowd lately.

[Dalendenver]

I started this thread several months ago and got nothing but a bunch of crap answers. I had investigated the legalities of this extensively but was told by people that obviously didn't know anything about it that I was full of s**t. So I moved on to forums that were more positive for a while. Imagine my surprise when I come back and the first thread in this section is an answer to my question of so many months ago. We finished the first 80% receiver on my drill press two weeks ago and it shoots flawlessly. About 7 more to go.
https://www.ar-15.co/threads/103575-80-Build-Party-Feeler