Seen among the weapons in the arms dealers caches is a Beretta 92FS Inox with pearl grips. It was never picked up or fired in the film.
Colt M1911A1
Used by Steven Seagal to dispatch a thug after dealing with the arms dealer.
Colt Double Eagle
A thug in the illegal arms dealers cellar is armed with a Colt Double Eagle Officer's Model . Ruslan (Steven Seagal) is also seen retrieving this weapon from one of the russian mobsters that attempted to take him down during the beginning of the shootout in the parking garage.
CZ 52
One of the sidearms used by Mikhail Abramov (Igor Jijikine).
Glock 19
Used by one of the thugs working for the illegal arms dealer. In one of the oddest cutting errors of all time, this and all the other weapons being discarded (three total) turn into the same Glock 19 with stainless barrel.
Ruger Mk III
During the hospital shootout Mikhail Abramov (Igor Jijikine) discards his CZ 52 and switches to what appears to be a stainless Ruger Mk III.
Among the weapons used in the parking garage shootout is a gold plated Taurus PT92 with pearl grips and a black barrel. This exact same gun was also used in Smokin' Aces 2: Assassins' Ball (the same armorers who supplied guns to that movie also worked on this movie).
Walther PPK/S
Used once by one of the thugs when Ruslan (Steven Seagal) attempts to flush the men who attacked his wife and daughter out of an apartment complex.
Assault Rifles
Norinco Type 84S
Used during the hospital shootout by all Russian mobsters.
Olympic Arms K3B
After taking out the illegal arms dealer, Ruslan takes the liberty of relieving him of his excess baggage. This includes a Olympic Arms K3B Carbine.
Machine Guns
Daewoo K3
Only used once, during the final firefight in the hospital.
Special
Garvin Kross (Stunt Coordinator) remarks in the Making-of that the K3 was brought down to about 500 rounds per minute from 750.