Exactly my concern.
Originally Posted by Decoligny
Not 100% sure, but knowing California it wouldn't suprose me if they consider a dummy launcher a firearm. It uses a shell with a gunpowder charge to shoot off a projectile after all.
(3) The term "firearm" means
(A) any weapon (including a starter gun) which will or is designed to
or may readily be converted to expel a projectile by the action of an
(B) the frame or receiver of any such weapon;
(C) any firearm muffler or firearm silencer; or
(D) any destructive device.
Such term does not include an antique firearm.
Cal guns Wiki even says "Starter gun"
Even the hammer shot expels a projectile.
I'd love to get some definitive discourse though.