pf2e.fyi
From Pathfinder Society Quest #10: The Broken Scales, which isn't enabled.

Spear Launcher (Q9:3-4)

HAZARD 4
MECHANICALTRAP
Stealth +15 (trained)
Description A wall socket loaded with a spear connects to a floor tile in one 5-foot square.
Disable DC 22 Thievery (trained) on the floor tile or wall socket
AC 18; Fort +11, Ref +3
Hardness 8, HP 32 (BT 16); Immunities critical hits, precision
Spear (attack)
Trigger Pressure is applied to the floor tile.
Effect The trap shoots a spear, making an attack against the creature or object on the floor tile.
Melee Spear +17, Damage 4d8+8 piercing
Pathfinder Society Quest #10: The Broken ScalesOGL