I’m for neutering the ATF completely, with regards to tax stamps, suppressors, and definitions/barrel lengths, etc. however, when looking at the Q design, the rubber piece on the end doesn’t seem to be what this is about. It’s the mechanism it’s attached to, which is NOT a typical pistol buffer and upper, at least in appearance....and is the same design their original, patented, RIFLE stock is attached to? Then again, maybe it’s under 26”, as well?

You have to remember: With any government agency, only so much nefariousness is possible within their low competency threshold.