Recently we did a few changes to the flare gun loot balance, where only 2 sets of special care packages and 2 BRDM-2 can be called in per game total, down from 3. The 2 sets of special packages are given to players who shoot the flare gun inside the play circle and the BRDM-2 are given to players shooting it outside the play zone.
Note: Please know that the flare gun should be used only after the first circle ends. The flare gun system is set up in such a way that it is fruitful/provides supply only from the second circle. You will find the loot count indicator at the bottom right-hand side of the screen while equipped with the flare gun.