Firearms; Ammunition for firearms; Less-lethal projectiles in the nature of projectiles that are less likely to cause death or great bodily harm than lethal projectiles; Projectile launching devices not for recreational use in the nature of pneumatic guns, pneumatic shotguns, pneumatic grenade launchers, and pneumatic launchers; Pneumatic projectile launching devices not for recreational use classified as firearms, namely, pneumatic guns, pneumatic shotguns, and pneumatic grenade launchers; and Pneumatic guns not for recreational use including components and accessories therefore, namely, pneumatic gun regulators and air systems comprising air tanks, CO2 tanks, CO2 cartridges, and compressed gas holding systems for pneumatic guns, grips including pistol grips and small arms grips, and gun tactical rails