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Firearms and component parts thereof, namely, grips, vertical grips, pistol grips, rails, side rails, rail covers, mounting rails to attach gun accessories, vertical foregrips, butt stocks and butt plates for rifles and shotguns, fore ends, rear sights, flashlight mounts, tactical lights to be attached to and for use in connection with firearms, optics and optic mounts, sling mounts and rifle slings, holsters, laser sights, namely, non-optical and non-telescopic open sights for use on firearms, gun stocks, handguards, flashhiders, hammer stocks, mounts for firearms, magazine catches, upper and lower receivers, barrels, bipods; Pistons sold as a component or part of firearms; Muzzle brakes for firearms; Trigger mechanisms, namely, triggers, springs, roll pins, disconnector and adjustment screws sold as a component part of a firearm; Ammunition magazine pouches and ammunition bags; Magazine holders for firearms; Magazine floor plates for firearms; Gunstock recoil pads; Sight mounts, gun stock recoil cushions; Charging handles for firearms; Cleaning implements for firearms, namely, brushes, rods; firearm attachments, namely, universal mounts for attaching accessories in the nature of ammunition to a firearm; Sight lens, namely, non-optical and non-telescopic open sight for use on firearms