Movie trivia and pistol expertise

[Sixxshooter]

Greetings everyone...Just signed up and have a question for the experts out there. Please forgive me if this has already been addressed and I missed the posting (like I said, I'm a newbie 'round these parts). In the film, "The Good, the Bad and the Ugly" there's a magnificent scene where Eli Wallach finds his way out of the desert and into a gun store where he proceeds to "customize" a pistol for himself. Can anyone definitively identify the three pistols he breaks apart? Most of the scene is close-up, so the various parts Wallach uses are fairly clear to the viewing eye. Many thanks in advance to you film buffs.

Cheers, Sixxshooter

[Major 2]

51 Navy as I recall

[W. Cyrus Tolman]

Not sure how accurate:

http://spaghettiwesterns.1g.fi/guns.htm

[Sixxshooter]

Many thanks for the info! Much obliged.