Karen (Cathryn de Prume) is seen in her apartment wielding a snub-nose revolver with a covered hammer shroud, which appears to be a Smith & Wesson Model 38 "Bodyguard" (though it's hard to tell for sure).
Russian mob enforcer Kerr (Christopher McDonald) carries a Heckler & Koch USP as his sidearm in the movie. Terminal Velocity may be the first movie ever to feature this pistol (since the USP debuted in 1993, when this movie was filmed).
During the ambush scene, Ben Pinkwater (James Gandolfini) tries to draw a Beretta 92FS on Krista Moldova and Ditch Brody (Charlie Sheen). Krista takes the gun from him and gives it to Ditch, whose inexperience with guns is demonstrated when he tries to fire the Beretta with the safety on. Most of the other Russian mafiosos also appear to be carrying Berettas in the scene.
During the ambush scene, one of Kerr's henchmen carries a Ruger AC556 automatic rifle fitted with a Muzzelite Bullpup stock. After this henchmen is hit and killed by Krista's Glock 17, Kerr himself takes the weapon and uses it.
Krista Moldova's partner holds what appears to be a Grendel SRT bolt-action, magazine fed sniper rifle during the ambush scene, which is then used by Krista herself.
Several of the Russian mafia henchmen throughout the movie carry Heckler & Koch SP89s that have been converted to full-auto and fitted with MP5K foregrips. They are recognizable as SP89s due to their permanently attached all-metal lower receivers.
During the ambush scene, one of the Russian mafia henchmen brings an M136 AT4 rocket launcher to the shootout. He is subdued, and the weapon is taken and fired at the Russians by Sam (Hans Howes).
