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ELB wrote:If you slide a tube of appropriate inside diameter over that device, does it act as the baffles for a suppressor? In other words was he actually selling the guts of a suppressor?

The news article seemed to imply that's a definite possibility to me:

wfmj.com wrote:See is still on probation from a 2014 conviction for possessing unregistered firearms after he sold an ATF undercover agent three kits that could be assembled to make a device used to diminish the report of a firearm.

Honest question - why is a license required to sell something that purports to silence a weapon? Are the sales of silencers reported to the federal government, or are forms required to be kept by the seller?

Seems to me the market would decide what silencers perform optimally, and the guy would go out of business without a good product and a good strategy for entry to market.