TexasCHLforum.com

It's not illegal (in TX) to sell an unserialized firearm that you made as long as you are not in the business of selling firearms. That doesn't make it a good idea.

Definitely an interesting development, though, if the classification of an AR lower as a firearm is modified. If that takes hold, we will see new legislation very quickly. There's no way, given the current climate, that we'll end up with 100% complete, unserialized AR lowers (and everything else) available by mail w/o FFL.