The Rifleman: Season 3, Episode 28
The Clarence Bibs Story (4 Apr. 1961)
Clarence, Millie's mop boy, is wearing a gun he just cleaned for a customer. When he accidentally kills a famous outlaw, some locals play up their new friend's reputation hoping for more fun as they expect his partner to come to town.
Writer:Calvin Clements Sr. (as Calvin J. Clements)