I was shooting my fully legal, registered SBR at a private range I was sharing with some boomer. He saw the length of it and was like, “Ooooh! Don’t get caught by law enforcement with that or you’ll be in deep shit!”. I explained that I had all the proper paperwork for it and even showed him that it was engraved with my name and the city I “built” the gun in like the law requires. He was still like, “…yeah but that’s a stock, not a pistol brace”. I just decided to drop the topic after assuring him one more time that it’s legal.