The Arbaki (Pashto: اربکي, singular اربکی) are a voluntary group within a Pashtun tribe which implement the orders of a jirga and operate similarly to a police force.
In Pashtun tribal society, the primary role of the Arbaki was to maintain stability.
Pashtuns described the concept of Arbaki as a voluntary group of adults who are specially selected, who carry out their responsibilities and implement the decisions of the Jirga, and to secure their tribal territory and take action against violations of law.
Jirgas used a system in which one of every forty mirah (men who embody Pashtunwali) in a tribe were selected to serve as Arbaki.
[1][2] The Islamic Republic of Afghanistan had paid and supported the Arbaki, and mobilised them alongside the Afghan Local Police.