Got the Stoeger in and to say I learned a lesson would be an understatement lol. It was listed as a M3000. The bolt was stuck open so I tore gun apart. While breaking it down there were 2 washers that were in the wrong place causing this. I also happened to see the M2000 stamped on the receiver!!! By the time I pay to get it back to the seller it would cost too dang much so I am going to chock it up to life lesson learned lol. On the bright side after cleaning with Birchwood Casey Gun Scrubber then lightly going over everything with some CLP and putting all back together properly it seems to function well. I will take it out hopefully soon and run 100 or so shells through it and if it seems legit I will take to a gunsmith to get the receiver drilled and tapped for a weaver rail. Otherwise I will sell it and cut my losses.