MIG3 Posted in M Best definition MIG3 A casual player, a pleb or a noob. Preferably likes to run an SK12 in a late game of PUBG. MIG3 is so casual he canÃ¢ÂÂt even carry his own weight. How satisfied are you with the definition? Looking for MIG3 meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 98 times.