Seth Gecko's (George Clooney) revolver is an Astra Terminator with a 3 inch full lug barrel and Pachmayr compact grips. It is also briefly handled by Jacob (Harvey Keitel), who threatens to kill himself if the others don't promise to kill him when he "turns". It is also later picked up and fired by both Scott (Ernest Liu) and Kate Fuller (Juliette Lewis).(NOTE: Honestly I want to thank the poster for elaborating that the revolver is an Astra Terminator 44 Mag. I have been trying to figure that out for so long and had at least 4 different revolvers I thought it was. Terminator being one. Thanks man thats awesome.-REMY)
Norinco M1911A1
Richard Gecko's (Quentin Tarantino) weapon of choice throughout the film is a Norinco M1911A1 with a nickel finish. (Question- Why dont they pick up Richies 1911A1 and use that against the Vamps. Carve some crosses in the FMJ, if that didnt work, at least kneecap em or something.)
In the script it says that the Texas Ranger Earl McGraw (Michael Parks) uses a Colt, he never has the chance to draw it. It's probably a Single Action Army, since the other incarnations of McGraw carry it.
Shotguns
Mossberg 500
Jacob Fuller (Harvey Keitel) locates a sawed-off Mossberg 500 with a synthetic loop foregrip and an extended magazine tube under the bar and uses it with a baseball bat to make a cross to both repel and shoot vampires.
Also, one of Carlos' thugs, Manny (Mike Moroff), wields a full-sized Mossberg 500 with a regular magazine tube, barrel ribbing and wood furniture.