Liar's GunWeapon 7
Source Pathfinder Guns & Gears
Damage 1d4 Piercing
Type Martial
Range 60 feet
Price 360 gp
Weight 1 bulk
This dubious weapon gets its name from the fact that it's typically crafted with multiple false barrels so that it's more difficult for enemies to predict the weapon's angle of fire from the four working barrels. Most of the time, this gun functions as a +1 striking Pepperbox with capacity 4 instead of capacity 3, albeit one with a complicated loading mechanism involving rotating the barrels. In a pinch though, all four of the real barrels can be fired simultaneously.
Activate 
Interact
Effect Make up to four Strikes with the liar's gun. Each of the four Strikes must be against a different target within a 20-foot cone. You apply and increasing your multiple attack penalty for the four Strikes only after resolving all attacks. If the weapon misfires on any of these attacks, wait to apply the misfire until you resolve all of the attacks.
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.
CapacityWeapons that have the capacity trait typically have multiple barrels or chambers capable of containing a round of ammunition. Capacity is always accompanied by a number indicating the number of barrels or chambers. After a capacity weapon is fired, you can select the next loaded barrel or chamber as an Interact action that doesn't require a free hand. Each barrel or chamber can be reloaded after it's fired as a separate Interact action.
CobbledThis firearm is cobbled together and likely to misfire. No matter how well you upkeep it, on a failed attack roll, the attack misses and you must roll a @Check[type:flat|dc:5]. If you fail this check, the weapon misfires.
ConcussiveThese weapons smash as much as puncture. When determining a creature's resistance or immunity to damage from this weapon, use the weaker of the target's resistance or immunity to piercing or to bludgeoning. For instance, if the creature were immune to piercing and had no resistance or immunity to bludgeoning damage, it would take full damage from a concussive weapon. Resistance or immunity to all physical damage, or all damage, applies as normal.
FatalThe fatal trait includes a die size. On a critical hit, the weapon's damage die increases to that die size instead of the normal die size, and the weapon adds one additional damage die of the listed size.
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.