ThirdGunSlot
Use a gun in place of tool.Details
ThirdGunSlot allows players and Rundown Developers to equip weapons in the Tool slot.
Make a new block in ItemDataBlock and assign it "inventorySlot": 3 and make sure to use the appropriate prefab paths. (BulletWeapon or Shotgun, depending on the type of weapon)
Assign the persistentID of your new block in ItemDatablock to the desired weapons via PlayerOfflineGearDataBlock and GearCategoryDataBlock. I recommend making a new block for GearCategoryDataBlock as well, to avoid any possible conflicts.
Finally, assign the persistentID of the desired weapon from ArchetypeDB to GearCategoryDataBlock and the .cfg file. Launch the game, and the weapon should be available in the tool slot. Weapons in the tool slot will use Tool Refill to reload.