There is a Legacy version
here.
ArquebusConcussive Fatal d12 Kickback Source NPC Core pg. 50Price 8 gp;
Damage 1d8 P;
Bulk 2
Hands 2;
Range 150 ft.;
Reload 1
Type Ranged;
Category Martial;
Group FirearmAmmunition Firearm Ammunition (10 rounds)
This is a long rifle that offers more range than the average firearm, though the long barrel and ferocious kickback make the weapon particularly unsteady unless a
tripod or other stand is used to stabilize it.
Traits
Concussive: These 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.
Fatal d12: The 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.
Kickback: A kickback weapon is extra powerful and difficult to use due to its high recoil. A kickback weapon deals 1 additional damage with all attacks. Firing a kickback weapon gives a –2 circumstance penalty to the attack roll, but characters with +2 or more Strength ignore the penalty. Attaching a kickback weapon to a deployed bipod, tripod, or other stabilizer can lower or negate this penalty.
Critical Specialization Effects
Source Core Rulebook pg. 283 4.0Certain feats, class features, weapon runes, and other effects can grant you additional benefits when you make a Strike with certain weapons and get a critical success. This is called a critical specialization effect. The exact effect depends on which weapon group your weapon belongs to, as listed below. You can always decide not to add the critical specialization effect of your weapon.
Firearm: The target must succeed at a Fortitude save against your class DC or be
stunned 1.
Specific Magic Weapons
Hex Blaster,
Mindlance,
Reaper's Grasp