Stop! Or My Mom Will Shoot (1992)

Director: Roger Spottiswoode
Cast: Al Fann, Estelle Getty, Gailard Sartain, JoBeth Williams, John Wesley, Martin Ferrero, Roger Rees, Sylvester Stallone

Synopsis:

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.