What made you think of this upper . Really at the end of the road eh?It tickled my interest for a minute yesterday so I looked. I spent about 10 min on it and everywhere was OOS.
I would keep an eye on sturmgewehr.com and subguns.com to see if one pops up. You could post a WTB ad there too and someone might offer one up.
I’m racking my brain on what platform I need next and I’m coming up with nada