| Trench Shotgun | ||
|---|---|---|
| Obatined: | Chasm Monastery | |
| The Trench Shotgun is acquired through the game story and is your basic shotgun. | ||
| Upgrade | Cost | Description |
| Full Choke | 400 | Adds an alternate fire mode which concentrates the cone of pellets and gives them longer range. |
| Barrel Shroud | 325 | Slotted barrel shroud improves gun handling for increased damage. |
| Polished Bolt | 300 | Faster cycle rate between shots improves firing rate. |
| Padded Grip | 300 | Padded front grip helps steady the weapon for reduced weapon kick. |
| Pump-Action Shotgun | ||
|---|---|---|
| Obatined: | Mountain Village and Shantytown | |
| The Pump-Action Shotgun is made by finding parts through Salvage. | ||
| Upgrade | Cost | Description |
| Incendiary Shells | 400 | Modified barrel tip applies ignitable fuel to outgoing pellets. |
| Wrapped Stock | 300 | Wrapped folding stock further steadies the weapon while firing. |
| Shell Mag | 350 | Removes need to load shells individually for faster reloading. |
| Combat Shotgun | ||
|---|---|---|
| Obtained: | Shipwreck Beach, Cliffside Bunker, and Research Base | |
| The Combat Shotgun is made by finding parts through Salvage. | ||
| Upgrade | Cost | Description |
| Modified Receiver | 325 | Tuned mechanics improve performance for additional damage. |
| Drum Mag | 400 | Improves reload speed and doubles magazine size to 12. |
