Whiteout

The following weapons were used in the film Whiteout:

Glock 26

U.S. Marshal Carrie Stetko (Kate Beckinsale) uses a Glock 26 throughout the movie, usually keeping it in a safe. Oddly when she initially removes it from the safe, it's a Glock 19. She later loses it when it's kicked away by the killer. Due to the weather, and the fact she was under attack, it was unrecoverable. She also uses it during the flashback sequences.
It may be noteworthy, that due to her injury, while she appears to have an adequate grip, she doesn't properly compensate for her left eye dominance, which leads to an unstable stance.

Glock 26 - 9x19mm

Stetko's Glock 26 holstered in the safe.

Stetko holding her weapon on Richard Pryce (Gabriel Macht).

Stetko going for her weapon before it get's kicked away by the killer.

Glock 19

When Carrie Stetko removes her sidearm from the safe, it has oddly changed to a Glock 19. During the flashback sequences, Stetko's partner Jack (Joel S. Keller) is also seen with a Glock 19.