As written is would outlaw all hammerless and potentially all cartridge double rifles. The lock time of any flintlock or percussion fired muzzle loading double rifle is markedly higher than the lock time of a cartridge rifle, and as such, cartridge firing double rifles would become illegal under the letter of the law. Likewise, striker fired double rifles have a shorter lock time than hammer fired doubles, and as such hammer fired double rifles still technically fall under the definition laid out.(9) a part or combination of parts that is designed and
functions to increase the rate of fire of a semiautomatic rifle but
does not convert the semiautomatic rifle into a machine gun.
No different under the proposed text:
As far as I can tell, it would also ban Echo triggers.