Stepping Stone ShotConsumable 7
Source Pathfinder Guns & Gears
Price 65 gp
Weight negligible
Ammunition round
Activate 
envision, Interact
A series of small stone discs pressed into a single round make up this ammunition. When you fire an activated stepping stone shot, whether you hit or miss your target, the shot creates a series of supports in a line that creatures can walk on as if solid ground. The line can ascend or descend at a 45-degree angle. The discs support any amount of weight, but don't otherwise pose any sort of obstacle; creatures and attacks can move through them if they wish. They crumble to dust if anything attempts to move or otherwise manipulate them. A creature can use a two-action activity, which has the manipulate trait, to Stride up to its speed on the stones while causing them to crumble behind it. This ammunition does not work in firearms with the scatter trait.
The stones reach up to 100 feet, and they last up to the end of your next turn if no one collapses them. However, the line also can't extend beyond the maximum distance for a Strike from your firearm (usually six times the firearm's range increment).
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
AlchemicalAlchemical items are powered by reactions of alchemical reagents. Alchemical items aren't magical and don't radiate a magical aura.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
TransmutationEffects and magic items with this trait are associated with the transmutation school of magic, typically changing something's form.