When it comes to improving your pistol, today's top handguns are equipped with a milled slide cut, and ZEV Technologies makes it easy to turn your SIG Sauer Compact handgun into a race-ready platform loaded with an RDS cut and much, much more. Each ZEV Technologies Octane Slide comes outfitted with a milled slot at the rear that's specifically designed to accommodate the Trijicon RMR red-dot sight. The milled slot sits just forward of the rear sight, so you can install and remove your optic without disturbing your open rear sight, and it also allows for the installation of suppressor-height sights for co-witnessing. A cover plate is included for use without an optic. The Mfg: Zev Technologies