Halfling Weapon Expertise Feat 13
Source Pathfinder Core Rulebook
Prerequisites Halfling Weapon Familiarity
Your halfling affinity blends with your class training, granting you great skill with halfling weapons. Whenever you gain a class feature that grants you expert or greater proficiency in a given weapon or weapons, you also gain that proficiency in the sling, halfling sling staff, shortsword, and all halfling weapons in which you are trained.
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.
HalflingA creature with this trait is a member of the halfling ancestry. These small people are friendly wanderers considered to be lucky. An ability with this trait can be used or selected only by halflings. A weapon with this trait is created and used by halflings.