The following weapons were used in the film Intolerable Cruelty:
Smith & Wesson Model 640
In the film's opening, Donovan Donaly (Geoffrey Rush) wields a Smith & Wesson Model 640.
Smith & Wesson Model 640 Centennial - .357 Magnum.
Donavan holding the revolver.
Near the end of the movie, Wheezy Joe (Irwin Keyes) is armed with what appears to be a Glock 26.
Wheezy Joe aiming the gun.