The Popgun is a weapon that appears in the series mainly in the Donkey Kong series.
The Popguns are first seen in Donkey Kong 64 under the name the Peanut Popguns. They are the personal weapon for Diddy Kong. They can be purchased at Funky's Store for 3 Banana Coins. Diddy always wield two Peanut Popguns and can fire peanuts fast at his foes. Diddy most likely wields two of them due to the peanuts being the weakest ammunition in the game. The Peanut Popguns are also used with Diddy's Rocketbarrel Boost allowing him to shoot switches or others in the skies.