I'd like to build an AR like my old M16A4. Fixed stock, 20" barrel, removable carry handle, etc. Ideally, I'd like to have all matching parts from the same place, but BCM doesn't make an A2 fixed stock lower. Does anyone know of a BCM A2 lower that I'm overlooking? I can find one from PSA or whoever, but I don't really want to go top of the line upper, and then something else for a lower.