Citizen, Patriot, Ranger
The ones at AR15Plus seem extremely expensive, though they are specialized metals, so that is probably the reason.
If you don't have experience using a drill press and taps, you probably shouldn't start making a receiver. Get a drill press and a few taps and experiment working on aluminum block.
Start here: CNCGUNSMITHING - www.cncguns.com - Home of the AR45
I have found three major methods of doing the build:
- Jig: The jig is somewhat expensive, but this is the most accurate.
- Receiver Template: Clamp a 100% receiver to your 80% and drill, not as accurate as the jig, but does get the job done.
- Paper: Get a paper template and drill through it.
- Eyeball: j/k
Other links, I have no affiliation with any of these sites.
Patriot Publications | The works of D.A. Hanks
80% receiver FAQ
AR 15 Lower Receiver Complete Kit
Building an AR from an 80% casting
AR15.COM :: Forums :: Building the KT-15 - By Secret Gunsmith - For Reference Only
OSI Gunsmithing Tools
80% Receiver Sources - Survival Monkey Forums
AR-15 Receiver Print
Finally, you shouldn't be selling receivers you make. You are allowed to build them, but manufacturing them for sale is kind of a big no-no to the BATF; remember always be safe, no one wants to wind up in federal-rape-you-in-the-ass-prison. I mentioned that I ordered 8 of them, I want to have enough to practice on; if friends are interested, I'd sell them a blank at cost and help them machine it.
Last edited by vbrtrmn; 11-14-2008 at 04:29 PM.