|Machine Gun McCain|
|Directed by||Giuliano Montaldo|
by Ovid Demaris
|Music by||Ennio Morricone|
|Edited by||Franco Fraticelli|
|Distributed by||Euro International Film|
|Box office||₤803,751 million|
- John Cassavetes as Hank McCain
- Britt Ekland as Irene Tucker
- Peter Falk as Charlie Adamo
- Gabriele Ferzetti as Don Francesco DeMarco
- Luigi Pistilli as Duke Mazzanga
- Margherita Guzzinati as Margaret DeMarco
- Claudio Biava as Barclay
- Steffen Zacharias as Abe Stilberman
- James Morrison as Joby Cuda
- Florinda Bolkan as Joni Adamo
- Tony Kendall as Pete Zacari
- Salvo Randone as Don Salvatore
- Gena Rowlands as Rosemary Scott
- Dan Gregory as The Baby-Faced Killer
Machine Gun McCain was shot at both Incir-De Paolis and Dear Studios in Rome, as well as Las Vegas, San Francisco and Los Angeles. Director Giuliano Montaldo stated that both Machine Gun McCain and Grand Slam were made to establish him in the film industry before making the films he wanted to make. Montaldo stated that Cassavetes took the title role to finance his own films.
Machine Gun McCain was entered into the 1969 Cannes Film Festival. It was released in Italy on 1 April 1969 where it was distributed by Euro International Film. It grossed a total of 803,751,000 Italian lire on its theatrical run in Italy. On its American release, the film was cut to 96 minutes.
In a contemporary review, the Monthly Film Bulletin described the film as "executed with minimal flair, and thudding rather heavily on the moralist/social documentary side of the fence" and that "apart from an over-use of the Techniscope zoom lens, there's no style to speak of." In a contemporary review, on reviewing the Blue Underground Blu-ray, Tom Charity described the film as "haphazardly scripted" but noted that it is "Cassavetes' participation alongside his soon-to be regular collaborator Falk and his wife Gena Rowlands that piques our curiosity" and that "Adroitly mixing stylish Roman interiors with colourful location work, fast-paced and featuring a ridiculously snappy Ennio Morricone dirge, 'The Ballad of Hank McCain', ... adds up to an attractive footnote to Cassavetes' career".
- Curti 2013, p. 29.
- Charity, Tom (November 2010). "Machine Gun McCain". Sight & Sound. British Film Institute. 20 (11): 88–89.
- "Festival de Cannes: Machine Gun McCain". festival-cannes.com. Archived from the original on 8 March 2012. Retrieved 7 April 2009.
- "Machine Gun McCain". Monthly Film Bulletin. London: British Film Institute. 37 (432): 147. 1970.