Acetylene pistol

Maybe "Seven-Gun" would be more appropriate.

Despite being literally made of guns, Six-Gun is also armed with his own gun—an acetylene pistol.

Fiction

Marvel The Transformers comics

Six-Gun had ion-pulse rifles for arms, but sometimes used a seventh gun, a high-temperature acetylene pistol that could melt through most metals. Metroplex's Universe profile

Toys

The Transformers

• Metroplex (Autobot City, 1986)

The Transformers Six-Gun (only available with Metroplex) came with a small weapon, labelled as a laser pistol in Metroplex's instructions but identified as an acetylene pistol in his packaging bio. Six-Gun was later redecoed into Metroshot.