Before you can fire magic attacks out of your modern firearms, you must bind a spell to an ammo box rather than the gun itself. Because spells are tied to your ammunition storage, you do not need a unique firearm model for every separate spell you want to cast.
Using the Arcane Anvil
1. Craft or locate an Arcane Anvil and right-click it to open its interface.
2. Place your empty or loaded ammo box into the anvil alongside a spell from Iron’s Spells ‘n Spellbooks.
3. Complete the imbuing process in the Arcane Anvil menu and move the modified ammo box back into your inventory.
Loading the Right Ammunition
Imbuing the container alone is not enough to make your weapon fire magic. Once the spell is bound to the box, fill that ammo box with the specific ammunition caliber that matches the firearm you plan to carry. Double-check that the rounds inside the imbued box fit your chosen gun, because you will need to reload your weapon from this supply before any magical projectiles can be fired.