A Projectile Hold-Out Pistol is a small, easily concealable type of slug thrower. It is usually used as a backup or emergency weapon. Projectile holdouts come in two types, Light and Heavy. Heavy pistols use a heavier caliber round and do more damage, but Light ones have higher capacity. They are otherwise similar in performance.
Many jurisdictions heavily regulate or outright ban the possession or use of projectile hold-outs.This item by ChrisDonovan.