When things go sideways, you need a trigger you can depend on. This is that trigger. Designed for peak performance in high-adrenaline situations, the RISE Armament LE145 features a crisp, balanced break. The trigger includes free anti-walk pins. It fits most .308 and .223 AR style platforms. Features: Single-stage trigger system 4.5-lb. pull weight Clean, balanced break Black 8625 hardcoat anodized aluminum cassette Comfortable, rounded trigger Unit weight: 2.6 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 Fits most .308 and .223 AR style platforms Self-contained design makes it easy and quick to install with no fine-tuning needed KNS pins recommended but not required. Rise Armament products are backed by a lifetime guarantee. Note: The center set screw should not be tampered with. Any attempts to modify the trigger will void the warranty. U.S. Patent No. 7,293,385