"The Rifleman" is an American television series that aired from 1958 to 1963. Set in the post-Civil War era, it follows the story of Lucas McCain, a widowed rancher and skilled marksman, who raises his young son, Mark McCain, in the New Mexico Territory. The show is known for its action-packed scenes and moral lessons, often highlighting the bond between father and son. The series features Chuck Connors as Lucas McCain and Johnny Crawford as Mark. Each episode typically revolves around their encounters with various challenges, including outlaws and conflicts with neighbors. "The Rifleman" is celebrated for its innovative use of a rapid-fire rifle and its portrayal of frontier life.