Upon hitting the ground, Mini-Pinger will send 3 yellow projectiles straight up into the air with a random angle. They will travel beyond the top of the map, before returning down to the ground. The projectiles are affected by wind. Because they travel a long distance even small winds may influence them. One thing to note is that if the projectiles are unable to make it past the top of the screen before hitting the ground, they will do nothing upon impact. This will happen if the initial shot lands underneath a bumper.
Just like Mini-Pinger, Pinger will send 3 yellow projectiles, following which will come 3 green projectiles. All behave in the same manner, but the green projectiles will deal more damage.
Final tier will send not only the yellow and green "pings", but also a set of 3 blue shots at the end. Again, this will shoot at random angles and is affected by wind, so be wary.
Due to how unreliable it is, pinger is often used in many ingame jokes and memes along with guppies and counter-X. Later on it becomes more powerful, but it's always random and unreliable.
The projectiles spawned by this weapon seem to keep their horizontal velocity even after reaching the top of the screen. This can cause the projectiles to return back down at weird angles if the initial projectile hit an obstacle at just the right angle.