I was bitten by the bug, and for my first AR, I'd like to mostly just learn as much as possible while building a "fair" rifle for as cheap as I can. So far I have inherited a stock and carbine length hand guards.

What does everyone recommend for a lower receiver parts kit?

I'm thinking I should do a complete upper, at least for a first rifle.

Can you all keep me in mind for any extra parts laying around? I'd love to also sit in on someone else's build, so I can watch the rifle come together.

Thanks!