Algodoo

I edited Frezzer's V.S.S Vintorez and actually gave it a suppressor, it also has a function to disable the suppressor, Press the R key and wait for a few seconds. There is a slightly noticeable change in bullet velocity (more with out silencer) but if you remove the hinge and replace it with springs to hold the rifle in place, you can tell that it has more kick without the silencer.

PS: This suppressor also deteriorates every shot just like a real one.