Other mistake: You can see a plane taking off between the leaves of a tree and into the opening as it passes the tree, while Mark and Lucas are talking. (00:22:15)
Factual error: Lucas is wearing a pair of jeans with a large "W" stitched on the right back pocket. These are Wrangler jeans, which first went on sale in 1947. "The Rifleman" is set in the 1880s.
Strange Town - S3-E5
Revealing mistake: After Micah is badly beaten, he's leaning on a barbed wire fence. The camera pushes in from behind him as the wire grows closer to the camera. Someone off-screen pulls it down out of the shot.
Continuity mistake: During most of the show Billy is wearing a shirt and vest. When he starts to go outside to face his ex partner it shows him wearing the vest. When he stands up to go outside he has coat on. When he gets outside he's back in the vest.
Factual error: The rifle model which the rifleman used was manufactured in 1892, but the film takes place in 1881.
Character mistake: Micah is clean-shaven but he enters the barber shop and asks for a shave.
Factual error: Ralph Hayden hires Mario Rosati to kill Lucas McCain, who had shot and wounded Hayden many years before. Hayden says McCain previously lived in Enid, Oklahoma. "The Rifleman" is set in the 1880s and Enid did not exist until 1893. (00:01:10)
Continuity mistake: The wagon is full of bundles of barbed wire when the boy falls off his horse and into the barbed wire fence. The boy is injured and loaded into the same wagon, that is now completely empty.