Quick Update... and a shout out to Chris Miller of M&M Outfitters of Lawrence Ks.
I had purchased their Anderson Mfg Upper assembled with BCG and charging handle on GunBroker for $259.95. Apparently, someone goofed up the orders there because what arrived on Fri 01/22 was just the upper only with dust cover and forward assist, but without the BCG and Charging Handle (which they do sell in that configuration). I was able to call Chris, and he had a replacement BCG and charging handle into the post via Priority Mail that afternoon. It arrived this afternoon and all is well.
Great company with which to deal. Check them out...
https://www.mandmoutfitters.com/