Signs
Gun Safety Sign 01
A metal thin block with 250 hit points.
Drops when destroyed
Iron× 3-6
Where to find (4 POIs)
Shotgun Messiah Factory (tier 5), Joe's Junction (tier 4), 4 Ever Video (tier 3), Patriot Pavilion.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.