It looks like Gru is the one with airsoft guns in this shortfilm by BirnyX/Johny Deadline Picture Production called "Nerf vs Despicable Me"... "This is the short film Nerf vs Despicable Me by BirnyX. Ever since the law dictates the ban on all physical weapons, the police have resorted to using the Nerf guns exclusively. Police have already included Nerf guns as part of their regular arsenal and use them in their daily training. The ban of all weapons, even airsoft weapons, is still in order, the Nerf guns remain to be the only exception.

Meet Despicable Me character Gru in real life. He does not care about Nerf regulations. He loves airsoft and he has probably last airsoft weapons. But they know it.

Battle between Airsoft Gru vs Nerf Police begins.

Nerf vs Despicable Me is the short film produced by Johny Deadline Pictures Production."