i finally go mine up and running the extractor was frozen due to hardenned lube, Kroil fixed the problem. It shoots very well, you can shoot a group with it with out waiting for it cool completely. My Bernedelli needs to cool completely between shots or it will walk them up the paper but the first shot is always on. Carlson's chokes has a choke tubes listed for the AA shotguns, hope they fit the combo rig also.