1

Flintlock pistol

2

Flintlock rifle

3

Revolver

4

Rocket launcher style tube

5

Arm cannon

6

Staff of bullet-shooting

7

Wrist-mounted

8

Shoulder mounted

9

On a belt, can fire without hands

10

Head-mounted

11

Shaped like a crossbow

12

Repeater

13

Machine pistol

14

Rifle hooked up to a backpack, Ghostbusters style

15

Turret, tripod-mounted

16

Stinger missile style, needs two people to hold it

17

Double barreled

18

Attached to a melee weapon's hilt

19

Crank-to-reload rifle

20

Wand of bullet-shooting