It is used by Blue, after arriving in the Maulmart, which he kills many enemies (off-screen) with it and kills one at long distance using his scope once. Afterwards, he tries to impress Pink by killing Mr. Dingleberry using his sniper, but fails.
In this episode, it first shows how the new sniper has now a auto-scope feature. It is used by Jason (Trollz0r) this time, when he arrives at the Cybertime Systems, killing two guards outside the gate, using the auto-scope. He then kills one technician with it, having is Rage Face on.