Built on decades of manufacturing and trigger building experience the Black Talon Tactical patent pending single stage calibrated adjustable drop in trigger system has the most accurate adjustable pull force system on the market for Nexus lower platform firearms. The Kuna has a different hammer than conventional AR triggers so we at Black Talon Tactical have developed a trigger based off of our AR platform. Triggers Fully adjustable and repeatable from 2.0lb to 5.5lb utilizing a calibrated scale clearly laser etched on the trigger housing. All our triggers are individually calibrated to within 1 oz. pull force after assembly. Please Note that our Curved Profile trigger starts at 2.5lbs and not 2. Our Triggers have ZERO Take Up, .5MM Break Travel and 1.25MM MAX Over Travel. We build all our components in house from A2 tool steel core hardened to near 60 Rockwell C and 6061 Aircraft Aluminum hardened to the T6 temper. We include an anti-walk pin set and all tools necessary to install the trigger system in your AR platform firearm.