All XS Products will fit on all generations of Glocks, Gen 1 through Gen 5.
Our Suppressor Height Tritium Night Sights Can work well as back up sights in some cases. Top of battery box must not be above 0.250” top of the slide to have sights co-witness in lower 1/3rd of RDO window. They are built and designed to regulate as a complete set. We can offer no guarantee or warranty to the regulation of the sights should you choose to use either our front or rear sights in combination with any other manufacturer's sights. View our Glock Installation Video!