The 662S-ST Timney Triggers boast of precision workmanship and are individually crafted and calibrated by hand for absolute perfection. Included in their top-grade selection is the AR Targa 2-Stage Trigger - a drop-in unit that is 100% ready to be installed in your AR-15. Its two-stage trigger pull provides a smooth, crisp operation, and is factory calibrated to deliver a weight of two pounds at each stage.The trigger housing is masterfully crafted from military-grade, 6061 T6 alloy and completed with a CNC machined, anodized finish. The hammer, wire EDM cut from S7 tool steel, has a Teflon-nickel finish to ensure lubricity. Moreover, other components are wire EDM cut from durable A2 tool steel and then heat treated to a robust Rockwell 58 rating, ensuring a dependable, long-term service life.This short model is seamlessly compatible with your AR15 firearm, features a small pin, and has a straight trigger to suit your needs.