A trench version of the Winchster Model 12 is seen in the hands of a GCPD police officer outside Arkham asylum. It is strange to see such an old pump shotgun in the hands of modern police officers.
The GCPD police use a Smith & Wesson 5906 as their standard issue sidearms throughout the film including Det. James Gordon (Gary Oldman) and Det. Flass (Mark Boone Junior). Rachel Dawes takes Flass' S&W to attempt to hold back the crazed Arkham inmates.
Though this is a proven Taurus, it is not a proven 617. It lacks the forward mounted front sight, and since Taurus revolvers are so similar in appearance, it's nigh impossible to distinguish without better pictures.
I know, I've been looking for days for the right revolver. The pictures I find suck. It looks like a model 19 snub copy by Taurus. The ejector shroud on the 617 is also flat, this one is curved. I alos messed up the 617 page, it's a pic of a 605. Whoops.
Carmine Falcone (Tom Wilkinson) uses a 1911A1 pistol and aims it at Bruce Wayne (Christian Bale) in the restaurant. A Chinese officer who arrests Bruce is also armed with a 1911A1, but it is barely seen.
Again, this is not a Model 15, but seeing as there are several S&W revolvers with the low mount sights, it's impossible to distinguish from the several models. Most likely a Model 10 in .38 Special, though.
Sound Suppressed Pistol
One of Ras Al Ghul's (Liam Nieson) men disguised as a police officer uses a sound suppressed pistol to kill a man from behind for witnessing their secret weapon. The gun is seen from only one angle and is too hard to indentify.
When Batman stops the drug trafficing at the docks, Falcone checks the chamber of his Remington Model 1904 12 gauge side-by-side shotgun. It is identified as a 1904 based on its curved reciever and location of the three pins on the side.