Goblin Weapon Familiarity Feat 1
Source Pathfinder Core Rulebook
Others might look upon them with disdain, but you know that the weapons of your people are as effective as they are sharp. You are trained with the Dogslicer and Horsechopper.
In addition, you gain access to all uncommon goblin weapons. For the purpose of determining your proficiency, martial goblin weapons are simple weapons and advanced goblin weapons are martial weapons.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
GoblinA creature with this trait can come from multiple tribes of creatures, 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.