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There are Legacy versions here and here.

PFS StandardGoblin Weapon Familiarity Feat 1

Goblin 
Source Player Core pg. 56 2.0

Others might look upon them with disdain, but you know that the weapons of your people are as effective as they are sharp. You gain access to all uncommon weapons with the goblin trait. You have familiarity with weapons with the goblin trait—for the purposes of proficiency, you treat any of these that are martial weapons as simple weapons and any that are advanced weapons as martial weapons.

At 5th level, whenever you get a critical hit with one of these weapons, you get its critical specialization effect.

Goblin Weapon Familiarity Leads To...

Goblin Weapon Expertise

Traits

Goblin:

A creature with this trait can be one of several kinds of creature, including goblins, hobgoblins, and bugbears. Goblins tend to have darkvision. An ability with this trait can be used or chosen only by goblins. A weapon with this trait is created and used by goblins.