Nighthawks

The following guns were used in the movie Nighthawks:

Nighthawks (1981)

M1911A1

NYPD Detectives Deke Dasilva (Sylvester Stallone) and Matthew Fox (Billy Dee Williams) use M1911A1s as their sidearms in the film.

World War II issued Colt M1911A1 Pistol - .45 ACP

Detective Deke Dasilva (Sylvester Stallone) draws his M1911A1 in the subway.

Det. Matthew Fox (Billy Dee Williams) holds his M1911A1 as he urges DaSilva to shoot.‎

The business end of DaSilva's M1911A1.

Remington 870

DaSilva (Sylvester Stallone) uses a Remington 870 with foldable buttstock to make a high-risk arrest

Fox (Billy Dee Williams) carries another pump shotgun. It seems to be also a Remington, with a regular buttstock, but is is never seen well, so it’s hard to be sure.‎

Walther P38

Wulfgar (Rutger Hauer) uses a Walther P38.

MAC-10

The MAC-10 is used both by Wulfgar (Rutger Hauer) and Shakka (Persis Khambatta) as they hold hostages on a skytram.

‎Wulfgar keeps two MAC-10's in a suitcase (and several boxes of Remington and Winchester ammo)

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Bolt action rifle

A police sniper uses an unidentified bolt action rifle. It can be seen clearly that it is being loaded with blanks

unidentified revolver

We can see Stallone shooting a nickel-plated or stainless 4” barreled revolver in an indoor range. It looks like a S&W N-frame (model 29?)

double barrel shotgun

Rutger Hauer keeps a double-barreled shotgun in another suitcase, along with several hand grenades

Smith and Wesson model 39?

In a very brief scene, we see Persis Khambatta holding an auto pistol. It looks like a S&W model 39 or 59, but it is impossible to be sure.

Also, when Nigel Davenport is giving a lecture to NYPD officers, we can see a poster behind him that shows a S&W 39, a S&W 59, several revolvers (they look like Colt and S&W), and what seems to be a Star model S.