I feel that the Greifelt guns I’ve handled, have been quality pieces-& undervalued ,even in their lower graded guns-
An example below is a 20 ga O/U, pre war quality gun, which appears to be built on the equivalent of a merkel 300 action , with double locking under lugs , intercepting sears and Kersten top bolts.

https://www.gunbroker.com/item/1006720444

One could do much worse for a light short barreled quail or grouse small bore!

I hope your new acquisition meets expectations, I’ve not seen any “ duds” .
Best Regards,
JBP