Just wait to see where prices go when Biden is elected. Yes @caf82313, I went there.This bubble is not just with these and the mp5 stocks.. its everything! SP5s are still going for $3500+, and there's the other thread with the $5700+ sp5k. Some are flukes and some are trends. Also noticed over he weekend, benelli m4s for $3000+, and two semi mini uzis sold for $3700 and $5700. I saw a stainless USPC in 9mm go for $1500 locally a couple weeks ago which seemed high for a used example. Colts ARs, Belgian SCARs, etc headed up at the buying surge rate as well.
The trend seems to be the "nice brand" stuff, surprise surprise! I would say if you have a nice collection you should hold off on buying military-type stuff and sell the things you've been thinking of getting rid of. Its the perfect storm of causes to create quite the sellers market.