Shotgun · 12 gauge

A break-action coach gun added with the Bikers update — two shells per reload, lethal at close range, and a Western tribute aesthetic. Sold at Ammu-Nation thereafter.
The Double Barrel Shotgun is a shotgun first introduced in Grand Theft Auto: Chinatown Wars and then later added to Grand Theft Auto Online as part of the Lowriders: Custom Classics update.
The Double Barreled Shotgun is an "over and under" shotgun, as seen in the HUD icon. This shotgun does not seem to be based on any real-life shotgun, so it is assumed that it is a customized/modified example.
The Double Barrel Shotgun returns in Grand Theft Auto Online, this time based on a Zabala short-barreled side-by-side shotgun. The weapon shares many similarities with the Grand Theft Auto: San Andreas rendition of the Sawed-Off Shotgun, only being slightly larger and with a darker brown wood coloring.