Tachibana Heavy Engineering's JT-G heavy laser cannon[1] was the second generation of JT-series laser cannons developed by T.H.E. and for use by the Eclipse Empire. Like the first generation laser cannon, it was both starship and starfighter-based weapon system.[1]
"JT" stood for Jacques Tachibana, CEO of Tachibana Heavy Engineering and like its B variant, the "G" was added to distinguish it.[1] This heavy laser cannon was able to deal slightly more damage to large capital ships and high damage to starfighters.[1]