The meanv suppressor is made to length for you specific bow. The rubber stopper is actualy not flat at the end it has two rings that look like a bullseye target. I personaly think that design helps eliminate the slapping sound you get with some suppressors. Also you dont have to worry about the gaudy mounting block and extra length of the rod like the sts has. Ive heard several people complain about the sts coming loose after awhile, that wont be the case with the meanv. As far as size and camo, there is directions on the meanv website that someone posted a link to earlier. Just look to see what camo you have on the bow and he can match it for you.