Trivia: The only combatant to get a Flawless Victory was Johnny Cage when he fought Goro. A Flawless Victory is achieved when a combatant takes no damage from their opponent.
Continuity mistake: In the fight with the ninjas where Lu and Cage are fighting 3 guys each while Sonya only fights one, there's a shot where Cage grabs a guy with a spear extended out by his right arm. In the next shot, it's on his left side instead.
Answer: Sonya's pistol looks to be a Glock, Model 17 or 19. It looks like the barrel was broken off up to about the front end of the trigger guard. If she fired it like that, the bullet would have significantly reduced muzzle velocity because the recoil spring is gone (it would be in the front part of the weapon that was frozen and broken off.) The remaining part of the slide wouldn't have any resistance working against it. Not only would that result in less pressure inside the chamber during firing, but it would also most likely send the slide back into Sonya's face if she pulled the trigger.
Mobrien316