Iris of the SkyWeapon 6
Source Pathfinder Guns & Gears
Damage 1d8 Piercing
Type Martial
Range 90 feet
Price 240 gp
Weight 1 bulk
This +1 striking jezail is built from white hot metal and has a ruby fused into the palm wood stock. When the iris of the sky misfires, you take 5 Persistent Fire Damage.
The first firearm of this type came as the result of a gunslinger who entreated an efreeti, wishing for the might of the desert sun. The weapon constantly glows and burns with a brilliant intensity. The firearm has since belonged to an extensive string of users and been replicated several times, though each wielder of the weapon, whether the original or one of its copies, has eventually ended up as a charred husk, slain by fire in battle or unusual accidents that no one could quite explain except, perhaps, the efreet.
Activate 
envision
Frequency once per minute
Effect You focus the solar energy housed in the ruby to release a gout of solar flame instead of a bullet. Make a Strike with the iris of the sky. All damage from this Strike is fire damage and the target takes an additional 1d6 fire damage and 1d6 Persistent Fire Damage.
Activate 
command, envision (fortune)
Frequency once per minute
Effect You make a wish into the iris of the sky, yearning for it to strike true, and then fire. Strike against a foe with the iris, rolling the attack roll twice and taking the better result. If the attack is a failure, you take 5 Persistent Fire Damage.
Traits
A rules element with this trait is one-of-a-kind. The DC of Recall Knowledge checks related to creatures with this trait is increased by 10.
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.
FatalAimIt's possible to hold the stock of this weapon under one arm so you can fire it with a single hand as long as the other hand isn't holding a weapon, shield, or anything else you would need to move and position, to ensure the weapon doesn't slip out from under your arm. However, if you use both hands, the weapon can make fatal attacks. When you wield the weapon in two hands, it gains the fatal trait with the listed damage die. Holding the weapon underarm stably enough to fire is significantly more complicated than just releasing one hand from the weapon, so to switch between the two grips, you must do so with an Interact action rather than Releasing or as part of reloading.