Fired by Kane & Lynch in screenshots. Called the "Copper" in-game. It is used by Chinese police.
Norinco Model 77B
Used by Lynch in a few screenshots.
Desert Eagle
Fired by Kane and Lynch in trailers.
Tokarev TT-33
Able to be purchased in Fragile Alliance Multiplayer mode
Machine Pistols
Ingram MAC-10
Fired by an unknown person in a screenshot and seen beening used by Lynch in a trailer. Called the "PAC-10" in-game.
SA vz. 61 Škorpion
Fired by lynch in a screenshot.
Steyr MPi 69
Fired by a robber in the cops and robber trailer.
Submachine Guns
Norinco Type 79
Seen in the hands of Lynch in a Gamespot interview.
QCW-05
Used by Kane and Lynch in screenshots. Found in-game with and without silencer.
Assault Rifles
SIG SG 552
Fired by Kane in one of the trailers.
Zastava M85
The Zastava M85 is used by mercenaries during the Fragile Alliance multiplayer mode in a screenshot. It is the standard weapon for players in all the Fragile Alliance modes.
Norinco QBZ-95
Used by both criminals, and police in multiple trailers.
AK-74M
Used by Kane in the E3 trailer.
Shotguns
FN Tactical Police
Wielded by Lynch in one of the screenshots.
Franchi SPAS-12
Used by Lynch in multiple screenshot.
Hawk Semi-Auto Shotgun
Wielded by Lynch in one of the screenshots.
A sawed off version is also seen.
Remington Model 870
Seen in the hand of Lynch.
Sniper Rifles
Norinco QBU-88
Used by Lynch During a E3 demo, and by cops in the Arcade Mode Traler. Can be found and bought with and without scopes.
Limited Edition Weapons
Some weapons can (presumably) only be obtained by purchasing the limited edition.