Now this would be a great tool for a hunting pistol to increase accuracy at a little longer range. The but stock attaches to the pistol but you must hold the pistol in place with your grip hand. But geez the 349.99 price tag is silly high.
http://www.gunsamerica.com/blog/usa-1shot-launches-non-nfa-pistol-buttstock/
http://www.gunsamerica.com/blog/usa-1shot-launches-non-nfa-pistol-buttstock/