Built on decades of manufacturing and trigger building experience the Black Talon Tactical patent pending Fixed Drop in Single Stage Trigger - Straight and Improved Finger Position system has the most accurate pull force 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. Available in 2.0lb, 3.0lb, 4.0lb & 5.0lb pull forces. Please note that for Curved triggers they are available in 2.5lb, 3.5lb, 4.5lb & 5.5lb pull forces so in check out if you choose the curved profile it will be a half pound heavier pull. All our triggers are individually calibrated to within 1 oz. pull force after assembly. 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.