Shotgun

A shotgun (also sometimes called a scattergun or fowling piece) is a firearm designed to be fired from the shoulder, which uses the energy of a fixed shell to fire a large number of small pellets, sawdust fragments, and other shrapnel called shot, or occasionally a solid bullet called a slug.

Stats
A standard shotgun has a x4 critical, does 1d8 of piercing damage, has a range increment of 20 feet, and carries one cartridge, which takes a full action to reload (except if the user has firearm proficiency). A good shotgun will cost between $12 and $30.

Variants
Double-barrel shotguns bear the same stats as a normal shotgun, but can hold two cartridges instead of just one. Reloading is still only one standard action. A double-barrel shotgun typically costs between $15 and $45.

A sawed-off shotgun is a shotgun which has been modified to have a shorter barrel, leading to a wider blast radius, shorter range increment, and heavier damage. A sawed-off shotgun has a x4 critical, does 1d10 of piercing damage, has a range increment of 10 feet, carries one or two cartridges (depending on the unmodified gun), and takes a full action to reload. Sawed-off shotguns may be easier to conceal or carry because of their reduced length. Sawed off shotguns are considered illegal weapons in many places, so check your local laws before modifying your weapon.