Except for the barrel length, that looks just like my VMT 22. For what it's worth the best shooters here don't use the clamp at all. According to Benny Hill who should know, it can change the POI when removed and replaced. If you do use it, put it in exactly the same place and torque it the same. I kept mine on as I will never win top prize money anyway. The POI change would be most acute with slugs. I've never seen anyone use the sling mount but the gun is truly multi purpose so it could come in handy. I just gave Mr. TV PP my scheme for using the gun in the US at a greater capacity. PM me if you are interested.
Gord