Keep in mind the "slam shooting" maybe fun, if you expect it.
But these guns have had more AD credited to this model than any other shotgun.
Not putting down the gun at all but, in the hands of someone wanting to "look cool" this is a real problem that will happen.
Not sure but I believe they are chmbered for 2 3/4''.
The price sounds very fair if in good condition. Just get your finger OFF the triger before you pump another round in the chamber.