Well this design sure has changed
If you're a watcher you probably recognize the name of the XG-31SR sniper rifle from this: [link]
but if you're new, here's the XG-31SR. The most powerful rifle SI has to offer.
Cartridge: 20x102mm Vulcan
2nd Cartridge: 20x77mm Trifecta
Magazine: 8 Rounds
Fire Rate: Semi-Automatic
Muzzle Velocity: 3,450 FPS