History

The early doubles used two triggers, one for each barrel. These were located front to back inside the trigger guard, and generally the index finger operated the front trigger and the middle finger the rear trigger. In double trigger designs, it is often possible to pull both triggers at once, firing both barrels simultaneously, though this is generally not recommended as it doubles the recoil, battering both shooter and shotgun.

Later models used a single trigger that would alternately fire both barrels, called a single selective trigger or SST. The SST does not allow firing of both barrels at once, since it must be pulled twice in order to fire both barrels. The change from one barrel to the other may be done by a clockwork type system, where a cam alternates between barrels, or by an inertial system where the recoil of firing the first barrel selects the next barrel. Generally there is a method of selecting the order in which the barrels of an SST shotgun fire; commonly this is done through manipulation of the safety, pushing to one side to select top barrel first and the other side to select bottom barrel first.

One of the advantages of the double, with double triggers or SST, is that a second shot can be taken almost immediately after the first. Pump-action and semiautomatic guns require that the fired round be ejected and a new one be loaded, which takes time. Even the few fully automatic shotguns which have been built, such as the USAS-12 have cyclic rates that can be exceeded by a quick shooter with a double.

Singleplayer/Co-Op

The Double Barreled Shotgun is also possible to pick up in the mission Ring of Steel.

Multiplayer

Damage 15-200 x8 (SP), 15-40 x8 (Regular MP), 20-45 x8 (Sawed-off MP)
Damage Multipliers None
Magazine Size 2 rounds
Maximum Ammunition 60 rounds (SP), 40 rounds (MP)
Reload Time 2.65 s for each shell
Rate of Fire Single shot (2-stage Trigger)
Range 256-800m (SP), 400-500m (Regular MP), 300-400m (Sawed-off MP)
Penetration Small
Fire Mode Single shot (2 barrels)
Ammunition 12 Gauge
Unlocked at lvl 29

This shotgun's lacks of accuracy and range is made up in damage to its target. If you utilize the Sawed-off attachment(unlocked by completing Marksman challenge II), it maxes out the damage making it a instant kill weapon. Like any Shotgun however, it has specific uses and roles. If you can use it in the proper settings it is nothing but instant death for the enemy. This weapon only fires twice before reloading.

The Double Barreled Shotgun is great for close quarters combat, but if you shoot both barrels and miss, it is very difficult to reload.

Challenges