The Rifle, Anti-Tank, .55in, Boys commonly known as the "Boys Anti-tank Rifle" (or incorrectly "Boyes"), was a British anti-tank rifle in use during the Second World War. It was often nicknamed the "elephant gun" by its users due to its size and large bore.

This model was built from photos on the internet and from TV shows about WWII. It's as accurate as I could make it.

This is not a video game/VR resolution model. Over 100,000 polygons.

Modeled in Lightwave, exported into other formats.

Most of the gun is hardened steel, with a little wood. I do not own any textures so I uploaded it without them.

More info, from Wikipedia:
Weight 35 lb (16 kg) unloaded
Length 5 ft 2 in (1.575 m)
Barrel length 36 in. (910 mm); Airborne: 30 in. (762 mm)
Cartridge Kynoch & RG .55 Boys
Calibre (bullet diameter).0.5507 in. (13.99 mm) (9/16 in.) In[1]
Action Bolt
Rate of fire ~10 round/min
Muzzle velocity
Mk I: 748 m/s (2,450.1 ft/s)

Mk II: 884 m/s (2,899.5 ft/s)
Effective firing range
23.2mm penetration at 90 100 yards (91 m)[2]

18.8mm penetration at 90 500 yards (460 m)[2]
Feed system 5-round detachable box magazine