The Bourne Supremacy

Walther P99

The assassin Kirill (Karl Urban) uses a Walther P99 with a silver slide (either customized by hard-chroming or a factory slide) during his pursuit of Jason Bourne (Matt Damon). It is most notably seen in his hands when he wounds Bourne from an overhead bridge while in Moscow, and later during the film's final car chase when fired from Kirill's Mercedes towards Bourne's taxi. There is also a publicity photo of Bourne using a standard black P99, though no scene in the movie depicts this.

Beretta 92FS

Jason Bourne (Matt Damon) has a Beretta 92FS at the beginning of the movie when he and Marie (Franka Potente) are escaping from Kirill (Karl Urban) in Goa. He is shown pulling one out of the glovebox of the SUV they are in. Later, he packs another 92FS (probably the same gun) up with his belongings when clearing out of their former home.