Mild Moose Tranquilizer Darts

The Mild Moose Tranquilizer Dart is one of Lucy's weapons.

Description
These darts are fired from Lucy's watch when loaded and, according to the name, contains a chemical that sedates targets when fired. Presumably, it works against living beings only, and is implied to have a limited duration. It is likely purposed to merely disable the opponent via non-lethal methods.

The name also indicates that the amount of chemicals contained within can be used to paralyze targets as large as a moose, which may explain why it instantly disabled Shannon in a single hit, and how she doesn't react to Lucy's reckless driving when tied to the roof of the car.

Involvement
After tailing Gru while he is dating with Shannon, Lucy fires the dart to prevent Shannon from humiliating Gru by removing his wig.

Trivia

 * AcceptableRequiredDipper-size restricted.gif name is only mentioned by Lucy when she used it.