Buggy Balls

The Special Buggy Balls (特製バギー玉) are Buggy's special designed weapons. These red bombs, engraved with Buggy's Jolly Roger, being projected by a cannon, can create quite a devastating explosion. These balls were first used against Orange Town, two of them were enough to leave the town half-damaged.

Muggy Ball
Later in Impel Down, Buggy has shown a modified version of the Buggy Ball, renamed the Special Muggy Ball (特製マギー玉), which he compacted it into a size small enough to be concealed into a person's body, but retain full destructive powers of the Buggy Ball (in essence, similar to a hand grenade). This was first used against the Minotaurus, where Buggy kicked the Muggy Ball from the sleeve of his pants, and the resulting explosion injured the Demon Guard severely, but it was still conscious and standing. In the anime, rather than kicking it from the inside of his pants, Buggy instead kicked it from his shoe after a small hole opened up on the bottom of the sole. Buggy also attempted to use a Muggy Ball against Mihawk, but he managed to deflect the Muggy Ball back towards Buggy using his sword.