The following firearms can be seen in the film The Godfather Part III :
Error creating thumbnail: File missing The Godfather Part III (1990)
Handguns
Beretta Cheetah
One of the hoods sent by Joey Zasa to kill Vincent Mancini (Andy Garcia ) carries a Beretta Cheetah , which Vincent disarms him of and uses to shoot both hoods. (Although the pistol turns into a Walther PP for a close-up).
Error creating thumbnail: File missing Beretta 81FS - .32 ACP
Error creating thumbnail: File missing A hood brandishes the Beretta Cheetah.
Error creating thumbnail: File missing Vincent (Andy Garcia ) holds the thug's Beretta on him.
Error creating thumbnail: File missing Vincent aims the Cheetah at the other thug.
Walther PP
For the close-up in which Vincent shoots the thug through the head, an Walther PP replaces the Beretta Cheetah. Al Neri (Richard Bright ) is also given a Walther PP to assassinate Archbishop Gilday.
Error creating thumbnail: File missing Walther PP - 6.35mm auto (.25 ACP), 7.65x17mm (.32 ACP) Auto or 9x17mm (.380 ACP).
Error creating thumbnail: File missing Vincent kills a thug.
Error creating thumbnail: File missing Neri checks his PP hidden in a box of cookies.
Error creating thumbnail: File missing Neri fires at Gilday, dressed as a priest.
Colt Police Positive
While dressed as an NYPD officer on horseback, Vincent Mancini (Andy Garcia ) uses a Colt Police Positive to shoot Joey Zasa.
Error creating thumbnail: File missing Colt Police Positive - .38 Special.
Error creating thumbnail: File missing Vincent shoots Joey Zasa.
Smith & Wesson Model 19
A Smith & Wesson Model 19 can be seen hanging in Mosca's cabinet of costumes and guns.
Error creating thumbnail: File missing Smith & Wesson Model 19 Combat Magnum - .357 Magnum
Error creating thumbnail: File missing A Model 19 is on the door above Mosca's assistant's left shoulder.
Astra 400
An Astra 400 pistol can be seen in Mosca's cabinet of costumes and guns.
Error creating thumbnail: File missing Astra 400 (9 mm Bergmann-Bayard caliber)
Error creating thumbnail: File missing An Astra 400 hangs on the wall under the three knives.
Beretta 92SB-C
One of the hoods sent by Joey Zasa to kill Vincent Mancini (Andy Garcia ) carries a Beretta 92SB-C . Armand (Rogerio Miranda ) and Francesco (Carlos Miranda ), the twins employed by Michael as bodyguards, also carry a Beretta 92SB-C .
Error creating thumbnail: File missing Beretta 92SB-C, compact model of the 92SB - 9x19mm
Error creating thumbnail: File missing A hood brandishes the Beretta Cheetah.
Error creating thumbnail: File missing One of the twins with his pistol.
Error creating thumbnail: File missing The other twin with his pistol.
Beretta Model 70
Vincent Mancini (Andy Garcia ) draws a Beretta Model 70 during the film's finale.
Error creating thumbnail: File missing Beretta Model 70
Error creating thumbnail: File missing Vincent fires his pistol.
Walther P38
Frederick Keinszig (Helmut Berger ) keeps a Walther P38 as his personal sidearm when he goes on the run from the mob.
Error creating thumbnail: File missing Walther P38 - 9mm
Error creating thumbnail: File missing Keinszig checks his P38.
Error creating thumbnail: File missing Keinszig's P38 falls off the table with his money when Vincent's men find him.
Browning Hi-Power
Mosca (Mario Donatone ) fires two shots from a Browning Hi-Power at the end of the film while on the opera steps.
Error creating thumbnail: File missing Browning Hi Power - 9mm
Error creating thumbnail: File missing Mosca draws his Hi-Power.
Shotguns
Double-barreled shotgun
Several 12 Gauge Double Barreled Shotguns with exposed hammers can be seen. Al Neri (Richard Bright ) uses one to blast out of the Atlantic City meeting, one of Vincent's hitmen uses one during the street parade shooting, Mosca (Mario Donatone ) uses one when shooting at Don Tommasino's car, and some of the actors during Anthony's opera in Sicily can be seen handling some.
Error creating thumbnail: File missing Al Neri (Richard Bright ) grabs a shotgun from behind the bar.
Error creating thumbnail: File missing Al Neri blows a door open to help Vincent and Michael escape.
Error creating thumbnail: File missing One of Vincent's hitmen reveals a shotgun from under his costume.
Error creating thumbnail: File missing An actor picks up a shotgun on stage.
Error creating thumbnail: File missing Michael (Al Pacino )'s guards check the shotgun of a man outside the theater.
Submachine Guns
IMI Uzi
The helicopter hitmen sent by Joey Zasa (Joe Mantegna ) to kill Michael Corleone (Al Pacino ) and other mob bosses at the Atlantic City meeting carry Uzi submachine guns.
Error creating thumbnail: File missing IMI Uzi 9mm
Error creating thumbnail: File missing A hitman fires an Uzi from a helicopter.
MAC-10
One of Vincent's hitmen during the street parade hit carries a MAC-10 .
Error creating thumbnail: File missing Ingram MAC 10 open bolt submachine gun - .45 ACP
Error creating thumbnail: File missing Vincent's hitman reveals his MAC-10.
Rifles
Carcano M38 Cavalry Carbine
Mosca (Mario Donatone ) loads but never gets a chance to fire his Carcano M38 Cavalry Carbine stashed in the opera house.
Error creating thumbnail: File missing Carcano M38 Cavalry Carbine with folded bayonet - 6.5mm.
Error creating thumbnail: File missing Mosca (Mario Donatone ) unwraps the Carcano M38 carbine.
Error creating thumbnail: File missing Mosca loads a round into the rifle.
Error creating thumbnail: File missing Mosca fixes a scope onto the rifle.
I believe that the round is a 7.35x51mm instead of the more common 6.5x52mm