Depending on who you are, no.
yes silencers are illegal in montana
Depends on who is using them and for what.
check with the prosecutor's office
Silencers are illegal in SOME states for the general public, but only a few. See link below
Unfortunately yes. But there are ways around it.
if a gun has a threaded barrel, (required for a silencer) it is classified as an "assault weapon" and is illegal in California.
Silencers are regulated by the Federal Government and require BATF approval. Oregon does not ban the possession of silencers, IF, the person in possession has the required federal approval.Keep in mind, that in order to own one of these devices, you need permission from you local chief law enforcement agent.
Its illegal everywhere in the US, but it won't be as easily caught in Mississippi.
possesion of illegal firearms and silencers, i think there might be other stuff too
No, it is illegal to own or use a paintball silencer without an actuall firearm silencer permit. You can buy mock suppressors, which look like silencers but do no significant effect for sound dampening.
The Silencers was created in 1962.
no