I had one recently on an 18" build. Really good quality, they have some nice features you don't see on some of the others. A shop local to me has them for $69 and I think that's a much better deal than the Andersons for not much more money. I'd say the Aeros are on par with my Spikes lowers.I'm going to have to add an AR stripped lower to the collection next year. I'd like to build either a tribute rifle to the A2 or something that is similar but with a 20 inch barrel. How do the Aero lowers stack up in terms of quality?