I put a low bid on a GB listing. There weren't any pictures and the seller had around 100 positive feedback. I figured if it really was LEO/Mil it would go for much more given the current climate. This was description:
"This appears to have the lightweight gen 1 barrel.
Information above was added on 4/5/2021 11:22:03 PM
Law Enforcement black Sig MCX virtus upper, latest generation. 300 blk 8" barrel, complete upper, bolt, carrier, and Sig adapter to use Ar15 lowers. This is upper only, for pistol build or SBR. I accept PayPal friends and family or you pay the upcharge, zelle, or PMO"
Of course, seller added top line info after I bid. Got it for $1525. The legacy barrel is a bit of a disappointment but the Geissele CH was a nice surprise. I just realized it didn't come with the Sig adapter for standard lower.
Side note - I have a new KAC SR30 lower but can't stomach the thought of paying over 3k for the matching upper right now. Will this mate up ok? Ambi functions and trigger work?
I'm new here so still learning how the system works. If you use @user it tags them? I have read enough on the forum to know @coregon is the answer man. What an incredible resource to the forum! Just didn't want to bother him. Thank you all for the info.