Have you seen this miniature pistol Kolibri in Battlefield 1? Sort of a weapon for an ant. We have previously written, it is not just Easter egg but a real weapon, that was available just in the era of the First World War.
Since it is not Easter eggs, it opens in certain circumstances, so any player can get a gun just pumping. To get Kolibri, you will need to reach rank 10 in multiplayer — simply play to rise your level from all your actions.
Upon reaching the rank of 10, you can buy Kolibri under secondary weapons — only 150 bonds.
Do not forget, this is the weakest weapon in the game — only 4 points of damage from each pellet.