Wow, that ended up being a lot longer than I thought it would take, but here is the finished product. I really do not want to go to an indoor range, but the weather is just not working out. So it used the Armalite rifle tube to get right in the center of the cutout, orange spring, Aero tube, and 5.4OZ buffer. So want to go shooting and see how it runs.
Thanks everyone for the guidance and for 98Z5V pointing out what I had so that I did not scrap the upper. If everything works out, a scope may be in the future for it.