Originally Posted by Drache
To become a firearm an airgun must meet 500fps AND 5.7 joules, which means with a .2 gram BB, the gun must shoot at 790fps.
That's firearms which required to be registered. If I recall correct definition of a firearm is basically a device that can be fired by one person and is capable of sending a lethal projectile in a direction. The required me to be classified as lethal it must have the 407fps rule. any firearms between 407 fps and 500fps w/ 5.7J are considered as free firearms. meaning you dont have to register