4.5 mm Calibre Air Pistol has break barrel cocking. The Indian Hume Pipe Co Ltd manufactures 4.5 mm Calibre Air Pistol. . The Indian Hume Pipe Co Ltd also manufactures various types of pipes and allied products. The 4.5 mm Calibre Air Pistol has overall length of 350 mm and barrel length of 165 mm. This Air Pistol has weight of 1.2 Kg. This Air Pistol is available in range of 10 metres.