So the kit comes with 5 lowers and a jig for 320 or so. Bits are an extra 95 (looking for cheaper). There are currently 5 guys in on this, sorry Drew but my buddy who brought this too me already had two others involved and I had already told my other friend he could have one. But if you want to buy another lower for $54 from them we can mill it out. Here's our concern though. The lowers are CAST.. not billet or forged. We just read this about 30 minutes ago. So now we are on the fence. Spend the lesser money and just go for it. Figure its a good learning experience and from what we read, cast isn't the end of the world. You just shouldn't drop your gun or beat on it. But hell nobody outside of a war environment does that anyhow... ever there I'm sure they try to keep that at a minimum. It still works like a regular weapon. If we went with a JT jig and bit it would be just about $225 just for tooling and jig... lowers are $150 or so. But they are billet.
My main points for doing this are two fold, a good learning experience, second, an unregistered weapon... not waiting on FFL dealio.
Edit: The place
https://www.ar-parts.net/ar-parts/ar-15-80-jig-2-pack/ Reviews are mixed from their first run but seems the second run is good.