In contrast to division of work, division of labour is the specialization of an individual workers' or organizations' skills, through education, training, and practice.
AR15 Trigger Upgrades. 1  The trigger is one of the most crucial elements in achieving the highest level of accuracy from any firearm. Installation of a quality trigger will permit a light pull with little or no creep and overtravel.
AR Gas-System Lengths Explained. Eugene Stonerâs original patent for the AR-15âs gas system describes the manner in which gas produced by firing the projectile is used to cycle the bolt through a gas tube.