Deadly Weapons (1974)

When ambitious Larry finds himself on the wrong side of a gun for trying to blackmail the people listed in an address book, Crystal, his overly endowed executive girlfriend, decides to take matters into her own hands. Hell-bent on taking her sweet revenge on those who robbed her of her happiness, more and more, Crystal delves deeper and deeper into the dangerous criminal underworld, risking life and limb to get to the bottom of the mystery. Who can stop Crystal and her deadly weapons?