The Mask

The weapons seen in this movie are:

Ithaca 37

Stanley's landlady Mrs. Peenman uses a ithaca 37 to shoot Loki Stanley before he jumps out the window. An Edge City Police officer is seen briefly holding a Ithaca 37.

Glock 19

Dorian's henchman Freeze (Reginald E. Cathey) uses a glock 19 in the bank heist.

Heckler & Koch P9S

Sweet Eddie is seen using a p9s in the bank heist.

Colt Model 1903

Dorian Tyrell's weapon of choice is a nickle plated colt model 1903 when him and Orlando are interrogating the Mask into telling them where his money is.

Beretta Inox

At the Coca Bongo club near the end of the film. Niko protects himself from dorian's men with a Beretta Inox. Several of Tyrell's henchmen are shot but he succeeds in eliminating everyone except Niko himself. Loki Tyrell challenges Niko to a shoot-out, allowing Niko to shoot him. Niko fires several shots at Loki Tyrell, hitting him with all of them but Loki Tyrell is seemingly unharmed. He then proceeds to suck the bullets from his body and fire them back at Niko. Niko is hit several times and is killed.

Jericho 941

briefly seen when one of Dorian's men cocks a jericho 941 when capturing Tina(Cameron Diaz).

Smith & Wesson Model 66

Lt. Kellaway and his Partner Doyle, use Smith & Wesson Model 66 as their firearms.

Over & Under Shotgun

briefly used by Kellaway to get the attention of the Edge City Law enforcers dancing with ipkiss.

Walther PPK

Dorians doorman Bobby the Bouncer is seen holding a Walther ppk before he is knocked unconcious by ipkiss. Stanley then gives this gun to charlie but then at end of the film is taken by Kellaway.

M1 Rocket Launcher "Bazooka"

Pulled out of loki Stanley's pocket along with strange objects and a picture of Kellaway's wife.

M16A1

Strapped over the Edge City S.W.A.T Officers backs whilst dancing with Loki Ipkiss.

Smith & Wesson Model 19

the usual sidearm of the Edge City Police.

Colt Trooper

the usual sidearm of the Edge City Police.

Beretta M12

During the Coco Bongo robbery, one of dorian's men, Orlando(Nils Allen Stewart) uses a Beretta M12.

Smith & Wesson 659

During the Coco Bongo robbery, one of dorian's men uses a SW 659. This is the same henchman that uses the Colt m1911 during the failed bank robbery.

Colt M1911A1

Used several times by several men in the movie including Sweet Eddie(Denis Forest), Niko's(Orestes Matacena)henchmen and S.W.A.T officers.

TEC 9

During the Coco Bongo robbery, Sweet Eddie uses a Tec 9. He uses it mainly to shoot the giant pig filled with money and to shoot Stanley and Milo (Loki).

Micro Uzi

During the Coco Bongo robbery, one of dorian's men uses a Micro uzi.

M1928A1 Thompson submachine gun

a gun in which Stanley/The Mask(Jim Carrey) makes out of a balloon and uses to scare away the thugs.