Boys anti-tank rifle
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The Boys anti-tank rifle was a British anti-tank rifle used during the Second World War. It was often nicknamed the "elephant gun" by its users due to its size and large 0.55 in bore. Wikipedia
Manufacturer: Royal Small Arms Factory
Calibre: 0.55 in (14 mm)
Cartridge: .55 Boys (Kynoch & RG)
Effective firing range: 100 yards (91 m): 23.2mm penetration at 90°; 500 yards (460 m): 18.8mm penetration at 90°
Feed system: 5-round detachable box magazine
In service: 1937–1998
Length: 5 ft 2 in (1.57 m)