@CaptainFuggetaboutit @_Seraphim_ @matty @PatrickCooper That has nothing to do with the topic at hand

Per the NFA, registration, transfer protocol and the $200 tax are required for any mobile device that attaches to a firearm and reduces the sound signature of a gunshot by even a few decibels. Baffles don't have shit to do with whether or not such a device is labeled a suppressor, although the ATF does indeed restrict constructed baffles to inclusion with a registered suppressor that uses them

The devices you're advocating for are simply open front cans that direct the muzzle blast forward of the shooter, which reduces some of the perceived sound wave. It does not reduce the actual sound signature - which is measurable in decibels - whatsoever. There is no such thing as an unregulated device which attaches to a firearm and reduces the sound signature

Nor have you ever used such a device, because if you had you wouldn't speak this way. You're pointing to a video for a rather expensive version of this type of device, which people like because it looks like one of HUXWRX's actual suppressors and makes short barreled firearms with concussive muzzle blasts more tolerable to the shooter and people on the firing line. All the people in the video are wearing hearing protection because it's not a hearing-safe device, even though movie magic makes it sound dampened. Nor does HUXWRX claim that it reduces the sound signature, because it doesn't; it simply directs the muzzle blast forward, which makes a big difference in the comfort level when shooting shorties

There are all kinds of linear comps which work this way, all of them are fine at what they are, but none of them are alternatives to suppressors. If you want to pay several hundred dollars for something that looks like a suppressor but doesn't actually function like one rather than about $80 for the same shit elsewhere, then pat yourself on the shoulder for not paying a mere NFA tax, have at it