Being a family-friendly franchise, the Mappy series typically does not feature usage or possession of firearms from either Mappy or the Mewkies gang, despite the police and crime theme.

There are two exceptions to this, both being Mappy franchise projects released in the 21st century and aimed at an older audience. One is the merchandising for Mappy Park, a pachinko gambling game that is considered lost, so it is unknown whether guns actually appear in the game. However, a promotional cigarette lighter was made for the game shaped like a pistol. The other exception is the ShiftyLook Mappy: The Beat webtoon series where both Mappy and Goro use guns.