Beretta 92FS
Sheriff Eben Oleson (Josh Hartnett) carries a Beretta 92FS as his issued sidearm in the film and uses it until he loses it when the vampires flip over his van.
Glock 17
Stella Oleson (Melissa George) carries a Glock 17 2nd Generation as her sidearm of choice and pulls it on The Stranger (Ben Foster) that shows up in town as he threatens Sheriff Eben. As she is a Fire Marshal, it can be assumed it is her duty sidearm.
Dan Wesson Model 15
A Dan Wesson Model 15 stainless snubnose revolver is carried by Stella Oleson (Melissa George) and later by Sheriff Eben Oleson (Josh Hartnett) in parts of the movie. It is identifiable as a Dan Wesson because of its unique cylinder release.
Smith & Wesson Model 13
Peter Toomey (Jack Walley) fires a few shots from his Smith & Wesson Model 13 revolver at vampires to no avail as they attack his wife, only to be killed himself by Marlow (Danny Huston), the vampires’ leader.
Hatsan Escort Marine Guard Shotgun
A Hatsan Escort Marine Guard Shotgun is carried and used by Sheriff Eben Oleson (Josh Hartnett) and later used by Beau Brower (Mark Boone Junior). Hatsan Arms is a Turkish company that produces the Escort shotgun line. Due to it being a marine model, it has a stainless finish.
Mossberg 500
Sheriff Eben Oleson (Josh Hartnett) is seen using a Mossberg 500 shotgun with an extended magazine tube when he searches the police station. One of the town members is seen using one too.
Over & Under (O/U) shotgun
John Riis (Peter Feeney) has an Over/Under Shotgun ready to go on his coffee table when a vampire comes through his kitchen window and attacks his wife. He chases the vampire outside to save his wife, but is too slow to catch it.