Sorry not an open carry question but I'm sure someone one here knows I've been trying to find out if I need a tax stamp if I want to get a micro roni system for my Glock 21 thinking I would like it as a truck gun.I had a friend in Texas who bought one for his .9mm off of a site and just met the guy selling it at a parking lot and it's not a pistol brace but a sbr.thank you in advance .