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.
What is a trigger point injection? A trigger point injection is an injection of local anesthetic, with or without steroid, into the trigger point in the muscle. A trigger point is a band of tissue within a muscle that, when pressed, causes your typical pain. Trigger point injections are ordered by your doctor to try to help break up the tight muscle.