The following firearms were used in the film Bring Me the Head of Alfredo Garcia:

Bring Me the Head of Alfredo Garcia (1974)

Pistols & Revolvers

M1911A1

Bennie (Warren Oates) draws a full-size M1911A1 when shooting into the air while driving through Mexico with Elita. After this, he is seen only with the 9mm Colt Commander. By the looks of the Size or diameter of the barrel of the M1911A1 that he is firing only 9x19mm bullets in that one scene. Since information has shown that weren't any .45 ACP's at the time. Normally like this one would always use a Star Model B as the stand in to the .45 as it would save money.

World War II issued Colt M1911A1 Pistol - 9x19mm

Bennie draws his M1911A1.

Colt Commander

Bennie (Warren Oates) uses a Colt Commander throughout the film. Judging from the muzzle it appears to be chambered in 9mm which was more reliable at cycling blanks than the .45 ACP at the time.

Colt Combat Commander - .9x19mm.

Bennie draws his Commander in the car.

Bennie gets into a shootout with the two men in the station wagon.

Bennie finishes off one of his assailants.

Bennie with his Commander.

Bennie defends himself during the shootout with Sappensly and Quill.

Bennie draws his Commander on Max and his accountant.

Bennie shoots one of Max's gangsters.

Bennie confronts El Jefe.

Walther P38

Sappensly (Robert Webber) and several other gangsters carry Walther P38 pistols.

Walther P38 - 9mm

Sappensly draws his P38.

One of Max's men walks through the hotel room with P38 drawn.

Max's gangster is shot by Bennie.

Single Action Army

Some of El Jefe's bodyguards carry Single Action Army revolvers.

Colt Single Action Army w/ 5" barrel known as the "Artillery" model - .45 Long Colt

A guard with an SAA in his holster checks Bennie's basket.

Two of El Jefe's bodyguards fire SAAs at Bennie.

Smith & Wesson M1917

One of the bikers (Kris Kristofferson) draws a Smith & Wesson M1917 on Bennie and Elita.

Smith & Wesson M1917 Revolver (military issue with lanyard ring) - .45 acp

The biker draws his M1917 as he sings.

The biker drops his M1917 when Bennie shoots him.

Colt Detective Special

The other biker carries a Colt Detective Special, which Bennie is able to take from him.

Colt Detective Special - .38 Special

The other biker with his Detective Special.

Bennie shoots a biker.

Smith & Wesson Model 19

The two men that beat up Bennie and Elita and steal Alfredo Garcia's head each have a Smith & Wesson Model 19.

Smith & Wesson Model 19 Combat Magnum - .357 Magnum

One of the men ducks with his Model 19.

One of Bennie's assailants gets shot with his Model 19.

A bounty hunter points his Model 19 at Bennie.

The bounty hunter falls after he is shot.

Submachine Gun

Thompson M1921

Johnny Quill (Gig Young) uses a Thompson M1921 to mow down the members of Garcia's family who confronted Bennie about the head. One of El Jefe's bodyguards fires at Bennie's car with one in the finale.