I looked it up and you are correct, http://www.bulletbutton.com/ . Not ideal by any means, but it beats permanently eliminating the gas assembly. I had visions of our Junior Rifle team trying to compete with straight pull bolts. And our leader is not even back from Europe.Yesterday a friend/gun shop owner talked to DOJ. DOJ confirmed the new bullet buttons coming out will be legal. Put bullet buttons on your favorite lowers and buy a few cheap lowers and register those. Pick what you want to shoot for the day.