This MAX-9 Standard Slide Assembly allows for installation of micro red dot optics on MAX-9 pistols equipped with a loaded chamber indicator (model 3518). This accessory replaces the pistol’s loaded chamber indicator-equipped slide with an optic ready, direct mount slide for co-witnessed JPoint and Shield-pattern micro red dot sights. It comes turnkey with all sights, barrel, extractor and other slide components to simplify installation using the included installation instructions (attached below). Read the included instructions and warnings carefully before installing and using this slide assembly. This Genuine Ruger Factory Accessory is made in the USA.