Archives of Nethys

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Weapon Fusions

A weapon fusion is a small, prepackaged add-on that can be attached to any weapon to infuse it with magic. Adventurers use weapon fusions to customize their weapons for a specific enemy or to increase a weapon’s overall effectiveness. Weapon fusions are magic unless stated otherwise. While this causes the weapons they are installed in to be considered hybrid items, in truth the weapon and the fusion still operate separately. An ability that affects a magic item could affect the fusion installed in a weapon, but that would not prevent the weapon’s core function from operating normally unless the weapon was also independently a magic device. The hybridized fusion (see page 194) is an exception to this rule, as noted in its description. Weapons with fusions are considered magic for the purpose of overcoming damage reduction.
Click here for the remaining rules on Weapon Fusions.


Source Galaxy Exploration Manual pg. 87
Item Level 6
The tunneling weapon fusion transforms a heavy weapon into a tool that can carve tunnels into stone. As a full action, you can fire a tunneling weapon at a wall made of unworked stone or softer materials, blasting open a space 10 feet tall, 10 feet wide, and a number of feet deep equal to half the weapon’s range or range increment; if the wall is made of harder material, this has no effect. This requires the expenditure of ammunition equal to triple the weapon’s normal usage, and you must be within the first range increment of the tunneling weapon from the wall to use the weapon in this way. The blast leaves behind rubble in all squares of the newly created space, which is difficult terrain.
Any creature in the way of this blast must attempt a DC 15 Reflex save. On a failure, that creature takes half the weapon’s normal damage. This applies no other effects from the weapon other than damage.
This weapon fusion can be installed only in heavy weapons that deal kinetic or energy damage.