Trivia: Robocop was originally going to wield a Desert Eagle, chambered in .357, as his sidearm; however, it was found the gun actually looked too small when held with the bulky Robocop hands. The first solution was to make the gun bigger by adding a silencer, but that made it too unbalanced for Peter Weller to do the trademark spin. Eventually, the film's armorer had the idea of grabbing a Beretta M93R he had in his car and modifying it with a long custom barrel, inspired by a coffin design.
Trivia: The infamous "melting man" scene was a controversial addition to the film, and many people involved wanted it removed as some found it too disturbing while others found it sort-of silly. In later test screenings, it also proved to be both the single most popular and single most unpopular scene in the film during audience feedback discussions.
Trivia: 7 suits were used to make the whole film.
Answer: When Bob Morton is told by a tech that one of Murphy's arm was saved, Bob stated that he wants total body prosthesis. Meaning Robocop's entire body was synthetic. None of his actual body was used. The only thing that was used was Murphy's actual face.
Also, his human brain, and possibly his spine, where OCP could wire him into the suit.
Movie Nut