The Radian Guardian + Six combines an optic mounting plate, a wraparound optic guard, and integrated backup iron sights into one unit for Glock MOS slides. The guard wings shield your red dot from impact while the low-profile Six backup sights co-witness inside the Guardian housing. Features: Host: Glock MOS slides only Optic footprint: Trijicon RMR and Holosun 407C/507C (not RMSc or EPS) Integrated optic guard with protective side wings Six backup iron sights built into the Guardian housing for low-profile co-witness 7075 aluminum, hard-anodized black finish For Glock MOS slides with an RMR or 407C/507C footprint optic only. Verify your slide cut and optic footprint before ordering. GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.