Zombie Panic! Source

Glock 17

It holds 17 rounds. Baseline pistol in the game.

Glock 17 in hand.

Glock 17.

Glock 18C

Is almost identical to the Glock 17. Unlike its real-life counterpart it does not fire fully automatically.

Glock 18 in hand.

Glock 18.

Heckler and Koch USP 9mm

Chambered in 9mm, with a 15 round magazine. In-game name is "USP".

In hand.

H&K USP 9mm.

Walther PPK

It is incorrectly shown to have a slide release when reloading and uses the same ammunition as the other pistols for gameplay reasons even though this gun is chambered for .380 (9mm Kurz or Short). Lower magazine capacity than the other pistols but does not weigh anything. In-game name is "PPK".

In Hand.

Walther PPK.

(Unknown Model) .44 Magnum Revolver

It is a six-shot .44 Magnum Revolver. (Discussion moved to talk page)

Revolver in hand.

Revolver in game.

Remington 870 Shotgun

A stockless pistol grip shotgun that holds six shells of shotgun ammunition. Called the Remmy 870 in-game.

in hand.

Remington 870.

"Winchester" Double Barreled Shotgun

A double-barreled shotgun, has a tighter spread than the other shotguns.

In hand.

Double Barreled Shotgun.

Serbu Super Shorty

Holds 3 shells and only takes one slot in the inventory. Has a wider spread than other shotguns. Called the "Super Shorty" in game.

in hand.

Serbu Super Shorty.

AK47

Holds 30 rounds. Has the lowest rate of fire of the automatic rifles but does the most damage.

In hand.

AK47.

M4A1

Holds 30 rounds. Called the "M4" in game. Does slightly more damage than the MP5 and has the highest rate-of-fire of the automatics.

In hand.

M4A1.

H&K MP5A4

Holds 30 rounds. Has a 4 Position trigger group. Uses "Rifle Ammunition" for gameplay purposes. Called the "MP5" in game.

in hand.

MP5A4.

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.

HE/Frag Grenade.