Final film of John Russell. Russell would pass away 3 years later at age 70 after an acting career that spanned 43 years.
Not the first time 'Don Stark (I)' has been in something with the title "Under The Gun". He was previously in the pilot episode of "Sledge Hammer" (1986), which had the same name.
Has never been released on DVD.
The role of a villain as his final role casts John Russell against type for one of his best-known roles, that of Laramie, WY Marshal Dan Troop in Lawman (1958), a role he played for 4 seasons.
Sam Jones and Vanessa Williams briefly dated during filming.