According to the atf, a silencer is any device that reduces was designed for OR re-designed for diminishing the report of a firearm. Slap it on the end of your rifle, and you've committed a felony.
Are you sure? Are you sure they didn't submit a sample to the ATF? The initial ruling declared it to be an "arm brace" and not illegal to shoulder. It wasn't until 2015 that they amended the ruling.
Except they have specific "permission" to manufacture and sell the product as a brace...this guy didn't. That's where he fucked himself. He didn't get a ruling before manufacturing and selling, he waited for that to come after the fact. If he wanted to be above board, he should have requested...
Exactly. The older I get (and I'm not that fucking old) the more I appreciate a good quality optic that doesn't use batteries and that has primo glass.