Features: Match-grade precision upgrade slide Recessed slide cuts for compatibility with RMRA(R) or other optic (cover plate included) CNC machined from 416 stainless steel billet for superior corrosion resistance and durability Quench-Polish-Quench (QPQ) thermo-chemical case hardened to resist normal wear Front and rear serrations for easy slide manipulation Window cuts for more efficient cooling and airflow Individually hand inspected for accuracy No gunsmith required Limited lifetime warranty