The TT-134 Chaingun was a multiple fire mode Chaingun developed by TTI. It was the Standard Issue Weapon for the Twilight Trooper Corps's Assault Troopers. It had 3 primary modes of fire: Blaster, Ion and Accelerated Charged Particle, each of which fired at an impressive 200 rounds per second. Because of this, it was hooked up to a large ammunition bank carried in a backpack, which gives each mode a total lifetime per reload of 16 minutes, if fired constantly.