The design of our new Duty Line was driven by feedback from military and law enforcement operators. They wanted our patented Zero Creep Technology and proven stainless steel internals, but with a more tactile feel. To achieve this, we more than doubled the pull weight and length of the first stage. And after the zero creep break we engineered a much more forceful reset. The result? A totally different feel that offers more certainty with every shot. The Duty Line is TriggerTech's interpretation of what Mil-Spec should be. The AR Duty line is the latest in TriggerTech triggers that offers robust reliability without compromising performance. Inspired by active MIL / LE Operators these triggers offer a longer take up (on two-stages) and a more forceful reset. All pull weights and measurements are approximate. The installation guide is directed to experienced professional gunsmiths who understand the workings of their AR rifle and know how to fully detail strip the lower receiver. If you do not have these skills, we strongly suggest you retain the services of a competent professional gunsmith to install your trigger, and perform all important safety checks. For more information please refer to Frequently Asked Questions. Download the instruction manual here.