The Story of Billy the Kidd (2015)

William Jeffers Kidd, an outcast boy, gets revenge on his tormentors using supernatural powers. That help comes from the ghost of Billy the Kid whose 1873 Winchester rifle he finds, then hides again. A group of archaeologists subsequently find the weapon and it begins its magical actions. William's uncle, Sheriff Gary Kidd, learns to deal with his anger and frustration, as his stepmother Angela finally deals with his bullying son.