Spider-Man 3

The Following Guns can be seen in the movie Spider Man 3:

Spider Man 3(2007).

Beretta 92FS

Several NYPD officers are seen with Beretta 92FSs throughout the movie, mainly holstered and are mostly seen during the Sandman rampage from the truck.

Beretta 92FS - 9x19mm.

A police officer inspects a truck with his Beretta 92FS.

The same cop with his Beretta 92FS.

"Fire!".

Police officers fire their Beretta 92FSs at Sandman.

Beretta 92FS Inox

In a flashback of Ben Parker's death, Parker's killer(Michael Papajohn) is seen with a Beretta 92FS Inox.

Beretta 92FS Inox 9x19mm

Ben Parker's killer(later revealed to be Flint Marko who killed Ben Parker),Dennis,holds his Beretta 92FS Inox while trying to order Marko to get into the car.

"Get in! What are you doing?!" Dennis's Beretta 92FS Inox is visible on the bottom left.

Smith & Wesson Model 15

Flint Marko is seen with a Smith & Wesson Model 15 during the flashback of Ben Parker's death.

Smith & Wesson Model 15 .38 Special

It's more likely a Model 19, due to the shroud around the extractor rod. -MT2008

Flint Marco fires his Smith & Wesson Model 15.

Flint Marco taps his Smith & Wesson Model 15 on the window.

M16A1

The M16A1 is seen used by S.W.A.T. members during the scene where they try to help the hostage,but seems to be useless as Sandman(Thomas Haden Church) and Venom(Topher Grace) absorbes bullets.

Both of these appear to be M4s. It doesn't make sense that whoever handled weapons on the set of the movie would use two different guns, especially since the M16A1 is considered an outdated design nowadays and wouldn't be appropriate for a modern S.W.A.T team to use. -MT2008

M16A1 with 30 Round magazine - 5.56x45mm

A news report shows a SWAT member firing his M16A1 at Venom on the top left,but misses.

The SWAT member on the far left has an M16A1.

12 Gauge Double Barreled Shotgun

The guard in the van full of money is seen with a 12 Gauge Double Barreled Shotgun before Sandman storms in. It's unusual for an old gun to be used by a security guard.

1960s Era Commercial Stevens hammerless side by side shotgun - 12 Gauge.

The guard with his 12 Gauge Double Barreled Shotgun before pushed by Sandman.

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It looks more like a pump because one of the "barrels" looks bigger than the top one. It also looks to be a pump because of the way he's holding it. Although I'm not sure exactly what it is.

This is definitely not a double-barrel; it's a Remington 870, exactly as was guessed initially. -MT2008

M4A1 Carbine

A news report shows a SWAT member with an M4A1 Carbine when the trucks flip over.

Colt M4A1 Carbine with M68 Aimpoint reflex optic and Knight's Armament RAS railed handguard and vertical forward grip - 5.56x45mm

A SWAT member with his M4A1 Carbine before being squashed by an armoured truck.