If interested one can go over to youtube to see. By Robski. The soviets did issue a silencer that attached to the bayonet lug. Snipers were instructed to dump 2/3's of the powder charge for low noise and flash rounds. Distances were seldom over 300 yards at semi-exposed soldiers.

By Robski 'Snipers on the Eastern Front: Mosin Snipers!'

Small russian silencer that germans also copied from units captured off of partizans
mosin silencer.jpg