Need some opinions/ advice from some of you "gun hands"

That wasn't my intention. I'm not saying you're wrong at all, or even replying to anything you've posted. I think you've laid it out very well in fact.

The point I was making is that personally I'd avoid it because it's an area where there's active litigation going on, and the outcome of it could change what enforcement looks like in the long term. That's all.

The in-person visits I reference aren't published stories, but come from personal experience. I can't go into details, but it's happened/happening. The ATF also makes a big deal about intent. Selling a single 80% lower is fine. But when a sale includes tools, jigs, fixtures, instructions and the way BATFE looks at it gets more stupid nuanced and has lead to enforcement actions. Those are the kinds of things that people should be educated on, but would probably take pages to explain properly in a digestable way. Or at least more space than I'm willing to commit, lol.

Thanks for clarifying, much appreciated and I wasn't taking it as an argument.

The sale of tooling with the lowers as a kit became an issue last year when the rules went into effect.

Even then though, the existence of 80 lowers in and of themselves is not being challenged . It's the serialization aspect. As of last year, if you are a licensed dealer, with intent to sell, you are required to serialize them. Private owners, NOT selling are good to go. In fact, you can still sell if you're careful and can show no intent to be a manufacturer. I would simply avoid selling them altogether though. That has always been sticky.

There is nothing in the rules that went into effect last year that prohibits them.

However, all that said and done, we all make choices. I do agree polymer lowers are a joke and I'd go further and NOT buy a billet one. Forged, while not as tacticool looking, are about twice as strong. If someone has ever used an M-16 to break a fall/dive to the ground, they'll understand.

Thanks again