Subd. 1a. Felony crimes; silencers prohibited; reckless discharge. (a) Except as otherwise provided in subdivision 1h, whoever does any of the following is guilty of a felony and may be sentenced as provided in paragraph (b):
(1) sells or has in possession any device designed to silence or muffle the discharge of a firearm;
(2) intentionally discharges a firearm under circumstances that endanger the safety of another; or
(3) recklessly discharges a firearm within a municipality.
Sorry – any device designed to silence or muffle the sound of a discharge of a firearm is committing felony.
Now – can you buy them? Technically, yes, but one purchased it will be in your possession and that is also a felony. So, in short, silencers are illegal in the State of Minnesota.
Law enforcement organizations, military units and FFLs who sell to them may sell and/or possess silencers. But they are not available in Minnesota to the general public. 39 states currently allow the public to have silencers. Minnesota is in the minority of states that don’t allow it. And having a Minnesota Permit to Carry license doesn’t matter on this issue. The Permit to Carry license don’t give you license to own a suppressor.