Stop! Or My Mom Will Shoot

Stop! Or My Mom Will Shoot is a movie starring Sylvester Stallone, Estelle Getty, and JoBeth Williams. A tough police sergeant's overbearing mother comes to visit him and begins to meddle in his life and career.
A tough police sergeant's mother comes to visit him, and promptly starts trying to fix up his life, much to his embarrassment. For his birthday she buys him a machine gun out of the back of a van, and begins to further interfere with his job and love life, eventually helping him with a case he's on.