The Heavy Artillery Gun (HAG) was a mobile repulsorlift artillery piece used by the Trade Federation and superficially resembled their Multi-Troop Transports.
The HAG greatly resembled the MTT, but replaced the troop carrier bay with a massive artillery cannon, which had tremendous range. It had heavy armor which made it very resistant to laser cannons though bombs proved effective at destroying them.
It had very poor speed and maneuverability, and needed to anchor itself in place with two stabilizer paddles in order to fire its main cannon.
The HAG saw its first major engagement during the Trade Federation's Invasion of Naboo in 32 BBY while attacking a Naboo resistance base. Though the HAGs held the potential to devastate the turrets protecting the encampment, their heavy armor did not protect them from the powerful explosives of Havoc, Nym's personal craft, as he helped defend the encampment.
Later, they took part in the battle with the Gungan Grand army.
During the Clone Wars, the HAGs were also used by the Confederacy of Independent Systems. In 21 BBY, they were used in the siege of Felacat, encroaching on the Royal Felacatian Palace. The Jedi Padawan Ahsoka Tano was sent to secure Quene Miaria Prrt after a month of struggle. The Queen rebuffed her, and used her polymorphic abilities to change and charge the droid army. She inspired her people to do the same, and the battle ended with the droid forces torn apart.
The HAG first appeared in the 2001 video game Star Wars: Starfighter.
- Star Wars: Starfighter: Prima's Official Strategy Guide
- "State of the Arts" — Star Wars Gamer 4
- The Complete Star Wars Encyclopedia