The Hearthstone Model 9 is a bottom-of-the-barrel semi-automatic pistol chambered in 9x19mm, manufactured from injection-molded polymer and stamped steel components. The barrel is unrifled on early production runs — a cost-cutting measure that Hearthstone has never officially acknowledged. The trigger pull is heavy and gritty, the sights are rudimentary plastic posts, and the magazine release has a documented tendency to drop magazines under recoil.

The Payday is the firearm of last resort for people who cannot afford anything better. It is sold in blister packs at convenience stores in Shelf districts, often alongside prepaid comm cards and synthetic protein bars. Shelf security forces confiscate thousands annually, but the economics of the weapon make replacement trivial — a new Model 9 costs less than a decent meal in the Mids.

Despite its reputation as disposable junk, the Payday has an outsized cultural presence. It appears in countless Shelf folk songs and street poetry as a symbol of desperation and defiance. The phrase 'pulling a Payday' has entered common slang meaning to attempt something with inadequate tools and pure nerve.