I would like to know if sound suppressor exists for the Dragunov family (SVD, SVDS and Tigr) because I have never seen that on these rifles.
I'm sure they exist but I don't know how they would be manufactured to lock up to the existing flash suppressor assembly. To do it right, seems like you would have to dump the flash suppressor assembly and thread the barrel to accept one. Here in the USA, threading the barrel would depreciate the value of the rifle. If I had access to spare barrels, I wouldn't worry about it. You might ask Chris over at Dragunov.net. He keeps up with all the exotic toys that apply to these rifles.