Double-Barrel

The Double-Barrel is a shotgun that appears in BlastGen, it appears in all modes.

Campaign
It is commonly found off of Czech Militia shotgunners. It deals very high damage per shot, even being able to kill armored enemies with a single shot, and has a tighter spread when aiming down the sights. However, it only carries 2 shells. Despite its power, many players avoid the weapon and use other weapons, such as the MAC-12 or AK-47.

Multiplayer
It is unlocked at Rank 3, and is the first shotgun unlocked. The weapon fires 8 pellets per shot, with each pellet dealing 30 damage, requiring only 4 pellets to kill an enemy. It is unique that it has a much tighter spread while aiming down the sights, the other 2 shotguns do not have this trait, making it suitable for much further ranges. However, its one shot kill range only extends up to 60 metres, and at any range further than that, the Double-Barrel will cease to do any damage.

Many players dislike the Double-Barrel, since it only carries 2 shells, and will immediately replace it with the Mossberg 500A once it's unlocked. However, it can be a very powerful weapon in the right hands.

Zombies
The Double-Barrel appears in Zombies. It is simply referred as the DB Shotgun and can be bought off the wall for 200 points on all maps, as well as appearing in the Strongbox. The barrel is noticeably shorter than its multiplayer counterpart, and it does not feature the tighter spread while ADS. The DB Shotgun does a whopping 500 damage per shot, one shot killing almost every zombie until round 25, to which it becomes a 2 shot or 3 shot kill. It is the most popular weapon in Zombies because of its high damage profile, and the most commonly purchased weapon in the beginning. When upgraded via the Upgrade Machine, it becomes the Fire Dragon, dealing even greater damage, gains special Incendiary Shells, and a larger magazine. The incendiary shells the Fire Dragon utilizes have the ability to burn zombies that are shot with it, and are effective until round 40, where it will requires multiple shells just to burn one zombie.