The Schema Inside-the-Waistband holster features a minimalist design for enhanced concealment with smaller footprint compared to traditional inside the waistband holsters. Superior functionality and passive retention provide an exceptional platform for everyday carry for any user. Schema is optic-compatible and will work with Romeo Zero” RMR CC” Shield RMS” Shield RMS-C” Swampfox Sentinal” Hex Wasp” Holosun 407K” Holosun 507K” J-point” Crimson Trace 1550″ or similar optics. Does NOT work with Suppressor Height Sights.