big bang cannon with bangsite no projectile?
no projectile not a firearm
Chapter 12.04 - FIREARMS AND AIR GUNS
Sections:
12.04.010 - Definitions.
In this chapter, unless the context clearly requires otherwise, "firearm" includes, without limitation, a pistol, revolver, rifle, shotgun, machine gun, submachine gun, black powder weapon, muzzle-loading firearm, or any device which is designed to, able to, or able to be readily converted to expel a projectile through the barrel by the action of an explosive, other form of combustion or expanding gases.
(Ord. 3571 § 1, 2007: Ord. 1139 § 1, 1989: Ord. 242 § 1, 1965)
(Ord. No. 4332, § 6, 10-12-2015)
https://www2.municode.com/library/nv/clark_county/codes/code_of_ordinances?nodeId=TIT12PUPESAMO_CH12.04FIAIGU_12.04.230DIINUNLOUNXC
don't think that would fall under dangerous fireworks either
https://www2.municode.com/library/nv/clark_county/codes/code_of_ordinances?nodeId=TIT13FIFIPR_CH13.04THFICOCLCO_13.04.260EXFI
that should be plenty of ammo to make a future nra member