Noise reduction. To be effective in reducing noise, a silencer-equipped gun must operate from a closed breech and use subsonic ammunition. (Forget about those silenced revolvers you see on TV.)
No
Yes, silencers are legal in Nevada (assuming they are correctly registered with the ATF)
No. They trap and slow the release of gasses after the gun fires.
Silencers are not legal in the state of Iowa. Currently there are 39 out of 50 states that individuals, trusts and corporations can legally own silencers.
Typically steel or aluminum
Suppressors are legal, yes.
Silencers are illegal in SOME states for the general public, but only a few. See link below
Because they could easily be used as firearm silencers.
Yes. Must be registered with the Federal BATF, but state legal.
Basically any gun can have a silencer. Silencers don't work as well on revolvers, but any gun can be threaded for one.
there was yo-yos dolls jumpropes gun silencers and the vaccum cleaner
Gun silencers work by trapping and slowing down the escaping gases from a gunshot, which reduces the noise produced. The silencer contains baffles that allow the gases to expand and cool before exiting the device, muffling the sound of the shot.