The lead robber during the beginning of the film, holds a Italian made Pardini PC9 pistol. It is a large match grade target pistol, used in European IPSC style competitions and somewhat unlikely weapon to be carried by a bank robber.
It could be a stolen weapon.
True, but this notation appears to relate more to the none-tactical nature of the weapon, that it is out of place. (A blackpowder pistol for concealed carry, exed)
Frank Martin pulls a Bruni 8mm M1911 Blank Pistol from the shoulder holster of Wall Street (Matt Schulze). Later Lai (Qi Shu) uses it to threaten both Wall Street and her own Father.
The third assassin who shoots up Frank Martin's house. It appears to be a standard M16A1 with an unusual A2-ish forearm and a strange upper section that looks like it's trying to copy a Beretta AR-70/90 in general shape and style (especially the forward slant of the carry handle).
I want to say the unusual thing mounted on top of the M16 is a very old school laser aiming device.
SIG SG 543
Used by one of Wall Streets' assassins to shoot up Frank Martin's house. His SIG SG 543 has a 40mm launcher attached. The launcher for the SIG SG 550 series is the SIG GL 5140 grenade launcher however this is not one of those launchers. It looks closer to the M203 style.
During the battle inside the Bus depot, one of Wall Street's thugs fires a customized Ruger AC556 (the full auto version of the Ruger Mini 14) at Frank Martin. The rifle has a Choate™ aftermarket flash hider extension as well as a flashlight mounted to the barrel.
During the battle inside the Bus Depot, one of the assassins fires a full auto M16A2. (The real M16A2 is a three shot burst weapon, so this is a 'fake' M16A2, or an M16A3 (which was the A2 with the A1 fire control group that was issued in small numbers to Naval personnel). In some shots there are wear marks on the barrel that resemble the cutouts of an M4, however upon closer inspection, they are wear marks from either a non-standard laser or flashlight mount.
An Smith & Wesson Model 637 Snub nosed revolver (with black plastic grips) is carried by Tarconi (François Berléand) who offers it to Frank who uses it in his escape. Tarconi later offers the same revolver to Frank for his assault on the shipyard, whereas Frank declines, instead showing that he has bigger firepower for the mission.
On the film's cover, Frank has what looks like a 5906 in his left hand and a Beretta Inox in his right.
Fake Matador Rocket Launcher
One of Wall Streets' assassins uses a mocked up launcher that somewhat resembles the Matador Missile Launcher, however, the method of launching is completely different. It loads (and reloads) in the rear like an M1A1 Bazooka and fires 'self guiding' rockets that appear to be able to make 90 degree turns in flight.
Error creating thumbnail: File missingOne of Wall Streets' killers uses a large mocked up rocket launcher. This launcher looks like it is designed to be attached on a bipod or other style of mount. It is too forward heavy to be used by a man in the standing position.
Later the man firing the launcher pulls out the 'Special' munitions - a standard M20B style rocket with a cartoon shark face painted on to indicate it's 'special status'.
During the attack on Frank's house we can see a lot of 'spent' rounds falling to the ground. The extended tip and star crimped ends indicate that they are 5.56mm blank ammo.
