Percussion cannon
A percussion cannon was a weapon that was common during the days of the Galactic Republic. It fired explosive projectiles.
The Exocron Airfleet made extensive use of these weapons, mounting them on their skyfighters. Larger versions, called percussion repeater cannons, were used onboard their Airfleet vessels.
By 8 ABY, the weapon was considered to be archaic.
Appearances
"The Masters of Exocron"—The Kathol Outback (First appearance)