LONGEST RANGE SNIPER RIFLE: ACCURACY INTERNATIONAL L115A3 RIFLE, UK

With a confirmed kill at a staggering distance of 2,475 metres, the L115A3 holds the record for the longest shot in history. To further add to the weapon's mythical status, this was the same gun used by another British sniper in Afghanistan to kill six insurgents with a single bullet after the bullet hit the trigger switch of a suicide bomber's explosive device.