Very nice rifle. I have a model 4 and it shoots very nice.

You asked about scope mounts. I do not know if yours has the mount holes on the side the same as mine. But the Havlins scope mount for the Mossbergs bolts directly onto and is square. It does look a bit funky and you will need to have some mounts that extend back as it sits VERY far forward.

http://www.havlinsales.com/22rifle.htm