For the new Live Event 11 in Far Cry 5, you have to find and kill 4 bears with a handgun. The best choices for this bear challenge are magnum’s equipped with a marksman scope. In addition bring a bow to which is very useful to collect bait on the way.
The Bison Hill on the east end of the map remains one of the best spots to farm money and complete challenges. By using the bait a Bisons drops, you can attract (mostly) bears and use the magnum to down it with two clips. If the bear runs away there’s still a good change to kill it by using the scope.
After finding 4 bears you unlock the new D50 “Sovereign” handgun that can be found in shops. The Community challenge unlocks automatically and unlocks the Zip or Tracey outfits.