The TTI-D-50 was a Gas-Operated .450 caliber Slughthrower Sniper Rifle. It fired .450 caliber Armor Piercing High Explosive Fin-Stabilized, Discarding Sabot with a Phrik Coating. It was used specifically by Spec-Ops units. Only on rare occasions was it used by any other units or individuals. Each unit was hand built for its user at TTDS, no one Rifle was the exact same as another, though they all followed a similar design spec.