Zombie Panic! Source

Glock 17

It holds 17 rounds. Baseline pistol in the game.

Glock 18

Is pretty much the same as the Glock 17. Unlike it's real life counterpart it does not fire fully automatically.

Heckler and Koch USP 9mm

Slightly More powerful than the Glocks. Ingame name is USP

Walther PPK/S

Its incorrectly shown to have a slide release when reloading and somehow uses Pistol ammunition which is 9mmx18 and this gun is really chambered for .380 (9mm Kurz or Short). Slightly Weaker than the Other pistols. Ingame name is PPK

Unknown .44 Magnum Revolver

Its a Six shot .44 Magnum caliber revolver. (Any help on the type? Im not too good with revolvers-Ranger01 ) Ingame name is "Revolver"

Remington 870 Shotgun

A Pistol Grip shotgun that holds six rounds of shotgun ammunition. Called the Remmy 870 in game.

Winchester Double Barreled Shotgun

A Double barreled shotgun, slightly more powerful than the Rem 870.

Serbu Super Shorty

Holds 3 shells. Called the Super Shorty in game.

AK47

Holds 30 rounds.

M4A1

Holds 30 rounds. Called the M4 in game.

MP5A4

Holds 30 rounds. Has a 4 Position trigger group. Incorrectly uses "Rifle Ammunition". Called the MP5 in game.

HE/ Frag Grenade

HE Grenade shaped like an M18 Smoke Grenade. In game name is HE Grenade, but on the model itself the words "Frag Grenade" Can be read.