I looked at a similar unit for 10/22's and mini 14's at knob creek in the states. BATF says their fine because the trigger is pulled for each shot. the action floats on bearing slides with springs making it rebound about a quarter inch from recoil. your trigger finger stays in place, the gun rebounds against it. They will consider it a mechanical device to function with the trigger and ban it on that account. not even worth the effort. And if it wasn't tossed under this, even the conservitive goverment would allow it to be OIC'd out of existance, it would be political suicide and the media would have a field day. To bad, they are fun, and cheap.