there called suppressors and would be some what useful in a riffle. more useful for things like a 10 22 tactical or a pistol ass the ammo for the riffle would have to be sub sonic for it to take full effect. another not to be add on would be using things like legos steel wool tennis balls and make shift adapter for a old oil filer from a car. yes those exist in real life and work well. the silencer for the 22 could be made with mandatory items for crafting reasons. knife or glue. as make lego suppressor its really durable and would not fall aprt once glue was used. in return gun would make no noise at all. ... Lego silencer? ... you have got to be joking, that wouldn't work with a real firearm. Since that could literally break the pieces apart and it wouldn't even suppress any of the noise. And people can choose to say suppressor or silencer since it doesn't really matter, even some shows call suppressors silencers. not leggo but u can find them and u can make them buy a 22 rifle or handgun look up the guide. and try it your self
i did this before with my grandfather back in the 90's