Marathon Man is a 1976 American suspense-thriller directed by John Schlesinger (Eye for an Eye, Yanks) and adapted by William Goldman (Butch Cassidy and the Sundance Kid, The Hot Rock, Misery) from his novel of the same name. The movie stars Dustin Hoffman as graduate student Thomas "Babe" Levy, who is caught in the midst of a conflict between Nazi war criminal Dr. Christian Szell (Laurence Olivier) and government agents over a cache of diamonds. Roy Scheider and William Devane also star. A box office hit, the movie is famous for a torture/interrogation sequence involving dentistry work without anesthetic and the famous quote "Is it safe?" Laurence Olivier earned an Oscar nomination for Best Supporting Actor as the villainous Dr. Szell. The movie is also notable for being one of the first productions to use the newly invented Steadicam (Rocky and Bound For Glory being the other two films to use the new camera) and was the first film released of the trio.
The following weapons were used in the film Marathon Man:
Thomas Levy (Dustin Hoffman) owns a Colt Commander, inherited from his father. Several shots showing the smallish muzzle, reveals that Colt Commander in the film is either a .38 Super or 9x19mm version rather than a .45 ACP.
Colt Detective Special
Heckler & Koch G3
The guard in South America carries an early H&K G3 with wooden forearm and buttstock.
The bank guard carries an unidentified revolver.
All of the gang members that break into Levy’s apartment are armed with unknown revolvers that appear to be chambered in .22 LR.