Corrected entry: During the shootout in the grocery store, Fox uses an attachment called Corner-Shot to aim around corners without exposing the body. She holds it with one hand and flicks her wrist to angle it the other way. The error is that it can't be done without the use of both hands. One hand by the trigger and the other hand unlocks the swivel to change the angle.
Twotall
2nd Dec 2008
Correction: This is only true of the real-life version of the gun, but in the movie the Fraternity use very specialized, custom-made guns and equipment. The unlocking switch could be on the gun handle, or a simple switch she could flick while attaching the Corner-Shot to allow the swivel to stay unlocked.
Twotall