SFS Standard Quick Break Feat 5

Source Guilt of the Grave World pg. 114
Prerequisites Partial Corpsefolk
You learn to prepare your natural weapons much more quickly than before. Breaking off knives from your body loses the manipulate trait and becomes a free action instead of a 1-action activity, and your unarmed attacks are now treated as though they had the advanced weapon improvement.

Traits

Corpsefolk:A creature with this trait has the corpsefolk versatile heritage. An ability with this trait can be used or selected only by corpsefolk.