Strike Industries is proud to introduce a revolutionary new product. The Glock Universal (Optics) Mount. It has one of the lowest if not the lowest bore axis in the industry without the hassle and cost of cutting your slide! We have put many hours and 1000's of rounds down range with most of the more popular red dot optics on the market with no problems what so ever! This includes the Burris* fast* fire* II & III, Leupold* delta point* reflex sights, Doctors* II & III, EoTech* (MRDS*), Trijicon* RMR* and many others. The mount itself is secured to the slide viva the dove tail with 6 set screws. Two in the dovetail cut and one forward and aft of the dovetail and two more to prevent any shift. This provides a steady sturdy and rugged mount that will hold your zero. Other mounting hardware that we include is 6mm, 8mm and 10mm screws (two of each) that are used to fit and secure most of the popular optics out there. (Depending on what optic you have you will need to find the screws to correlates with your particular optic. There are two special screws for Trijicon RMR. Once you secured the GUM to your slide and found the correct post ( two sets of reinforcing post included) for your optic, go ahead and mount your optic on the post and use the final two longer securing screws to secure your optic to the GUM.