The RA-140 SST is a high-performing cost-effective upgrade to replace mil-spec triggers. - Key Features - Clean break with a short reset - Comfortable rounded trigger - Includes free anti-walk trigger pins - Single-stage trigger system - 3.5-lb. pull weight - Black 8625 hardcoat anodized aluminum cassette - 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 - Our 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. 7293385