Pathfinder 2e Action / Feat: Unconventional Weaponry

Description You’ve familiarized yourself with a particular weapon, potentially from another ancestry or culture. Choose an uncommon simple or martial weapon with a trait corresponding to an ancestry (such as dwarf, goblin, or orc) or that is common in another culture. You gain access to that weapon, and for the purpose of determining your proficiency, that weapon is a simple weapon.
If you are trained in all martial weapons, you can choose an uncommon advanced weapon with such a trait. You gain access to that weapon, and for the purpose of determining your proficiency, that weapon is a martial weapon.