Firearms attachments, namely, modular external rail systems for firearms; Firearm tactical rails; Firearm attachments, namely, mounts for attaching ancillary equipment to a firearm; Firearm hand guards; Firearm slings; Firearm receiving kits consisting of upper receivers and lower receivers; Upper firearm receivers; Lower firearm receivers; Firearms; Air pistols; Bipods for firearms; Bolt carrier groups for firearms; Cocking handles, charging handles and bolt handles for firearms; Gun barrels; Gun stocks; Holsters; Magazines for firearms; Pistol grips; Rifle hand grips; Triggers for firearms; Trigger guards for guns and rifles