Firearms History 25 Equipment 13 Pistols 13 Infantry 11 Rifles 11 Weapon systems 10 Periodicals 9 Equipment and supplies 8 Ordnance 8 Law and legislation 7 Guns 6 Weapons 5 Catalogs 4 Identification 4 Machine guns 4 Gun control 3 Pictorial works 3 Shotguns 3 Special forces (Military science) 3 World War, 1939-1945 3 Ballistics 2 Collectors and collecting 2 Design and construction 2 Dictionaries 2 Gunpowder 2 History 16th century 2 Infrantry 2 Military art and science 2 Ordnans 2