It's difficult to be more pro-gun than I am, but this, like open carry is just plain insane.
There is no legal use or need whatsoever for silencers or any non-criminal reason to have one.

Lend me your ears: Federal bill would remove restrictions on buying silencers
Published time: 10 Jan, 2017 22:19
Gun lobbyists are backing new legislation to make silencers easier to buy. Contrary to expectations the bill, which has the backing of Donald Trump, Jr, wouldn’t be fought as a Second Amendment issue but one of public safety.
The bill, Hearing Protection Act, HR 367 argues that silencers safeguard the eardrums of the nation’s 55 million gun owners. It would remove restrictions on the purchase of silencers for firearms under the National Firearms Act, and eliminate a $200 tax, lengthy paperwork and a nine-month approval process.

The bill was reintroduced in the House by Representative Jeff Duncan (R, South Carolina) and Representative John Carter (R, Texas).

https://www.rt.com/usa/373261-federa...ons-silencers/