ATF Claims Solvent Traps Were Always Unregistered Silencers… The ATF says that end caps by themselves are suppressors, even if an end cap is the only part an end-user has. The ATF clearly believes that a silencer does not have to be complete or functional before the owner crosses the line. Just the mere possession of a single part can send a person to prison if the ATF decides to prosecute. [More]
And some may be surprised with what they mean by “part.”