RISE Armament RA-434 High Performance Trigger Red Curved - The Rise Armament High-Performance Curved Trigger is a single-stage, drop-in trigger system engineered for compatible AR-style platforms. Featuring a smooth, consistent pull and crisp break, it delivers a refined trigger feel with a quick reset. The 3.5lbs pull weight provides a responsive, controlled experience, making it a versatile upgrade for a variety of shooting applications. Single-stage trigger system; Helps you shoot more accurately with less effort; Ultra smooth to the break with a crisp, clean release; Quick reset and low overtravel for serious speed; Friction-reducing premium nickel boron coating on interior parts for smoother contact surfaces; Lightened trigger pull (3.5-lb. pull weight); Lightened hammer; Straight trigger blade for enhanced control and lighter-feeling pull weight; Drop safety feature; Self-contained design makes it easy and quick to install with no fine-tuning needed; Unit weight: 2.4 oz; Manufactured and assembled in our facility according to strict AS9100 aerospace requirements, which are more stringent than standard gun manufacturing requirements; CNC machined from high-grade, heat-treated tool steel and aluminum; Black 8625 hardcoat anodized aluminum cassette housing; Fits most .308 and .223 AR style platforms; KNS pins recommended (available here) but not required. If you do not use KNS pins, be sure to follow step 8 in the installation instructions linked below. The set screws should be used with any trigger pins;