The Faxon Hellfire slide is the perfect upgrade for your G19 pistol!Features: Milled for Trijicon RMR & Holosun 507C Red Dots Manufactured In-House from 416 Stainless Steel DLC Coated for Increased Lubricity and Corrosion Resistance Enhanced Front, Rear, and Top Serrations Accepts standard sights for Glocks Posts Milled into Optics Cuts for Alignment and Recoil Absorption Ships with Billet Aluminum Cover Plate for Optic Cut Compatible with Gen 3 Parts for Glock Pistols 9mm CompatiblePlease note: Some mounting screws provided with RMR optics may be too long and impinge on the extractor spring rod. We recommend checking that your extractor is moving freely and not binding after mounting an optic to the slide.