"Want to be a MARKSMAN? Perhaps you just want an almost 1 SHOT WEAPON. The Intervention Sniper Rifle can almost 1 SHOT your enemies, but, it has a slower running speed, and a slower reloading speed, which isn't always awesome. But this weapon really packs the punch on anyone who crosses your path!"
The Intervention Sniper is a currently off-sale weapon that was purchasable for ??? robux.
It is currently the most powerful gun in the game, doing 90 damage normally and 100 damage as a head shot. The gamepass was taken off-sale sometime in 2019, but we don't know when exactly.