From The TimeSplitters Wiki

Generaly recived as a bad weapon ill-suited to the fastpaced gaming of TimeSplitters 2, the Sci-Fi handgun is more of an experiment then a proper weapon. The gun fires 3 slow-moving low damage shots with each pull of the trigger. The rounds are ricochette of walls and floors, bouncing round a few times before dispersing unless they hit a player, regardless of wether it is the player who fired them. On a slower or more tactical game, they could be a great addition for fireing round corners without risking ingery, but in TimeSplitters 2 they are more of an anoyance then a help. The TimeSplitters: Future Perfect version of this weapon is a vast improvement.