Match-grade precision upgrade slide. CNC machined from 17-4PH stainless steel billet for superior corrosion resistance and durability. Quench-Polish-Quench (QPQ) thermo-chemical case hardened to resist normal wear and tear even in the harshest conditions. Front and rear serrations for easy slide manipulation. Three window cuts for more efficient cooling and airflow. Individually hand inspected for accuracy. No gunsmith required