AK47

How To Obtain
Get to Level 18, then you can equip it in your Primary Slot.

Trivia

 * 1) It is the 3rd Assault Rifle one can unlock.
 * 2) It is the last Assault Rifle one can unlock.
 * 3) The AK47 is a real gun named the Kalashnikov which was mass produced by the Soviet Union in 1947 and beyond.