The Rival Arms® RMR Ready Match Grade Slide for Gen 4 Glock® 19 Pistols features recessed slide cuts for RMR red dot sights. This aftermarket slide and is precision machined from 17-4PH stainless steel with a corrosion-resistant QPQ thermos-chemical case hardened finish. This drop-in slide upgrade features 3 window cuts for efficient cooling/airflow and features front and rear serrations for easy slide manipulation. Backed by a limited lifetime warranty. Order now!