I built my own AR-15 pistol. With a brace. Brace is totally useless--actually gets in the way. Anyone else try to fire their AR-15 pistol from the shoulder? Totally ridiculous. Imagine the rear sight next to your eye. Strapping the buffer tube to my arm was awkward and made reloading a PITA. Brownell's was the only online supplier I could find with a plain buffer tube for an AR-pistol so f**k the ATF.