firearms; guns; firearm attachments, namely, modular external rail systems for firearms, mounts for attaching accessories to a firearm, mounts for attaching ancillary equipment to a firearm, and mounts for attaching gun sights to a firearm; pistols and parts thereof; revolvers and parts thereof; firearms parts and accessories, namely, rifle hand guards, rifle hand guard foregrips, rifle hand grips, rifle stocks, magazines for weapons, muzzle devices, namely, muzzle compensators and brakes that screw onto a rifle barrel trigger guards, triggers for guns and rifles, gun barrels, buffer tube kits comprised of buffer tubes for rifles, buffer springs for rifles, buffer weights for rifles, endplates for rifles and castle nut for rifles, upper and lower firearm receivers, charging handles for rifles, dust covers for rifles, bolt carrier groups for rifles, safety selectors for rifles, bolt catches for rifles, magazine catch releases for rifles, forward assists for rifles, takedown pins for rifles, non-telescopic gun sights, and ammunition