This mod adds Doomstick as standalone quad-barrel shotgun. Unlock Level: 60
Weapon will appear as Double-Barrel Shotgun(Mosconi 12G) for other players.

BeardLib is required.

Extract archive content to "mod_overrides".
How to Install Super BLT and mod_overrides mods tutorial by Master Indigo

Optional mods to use with this custom weapon:
FedNet-style Icons for Custom Weapons - Replaces inventory icon with Fednet style icon.