The Radian Guardian adapts a Holosun 407C or 507C footprint optic onto a Glock MOS slide while adding impact protection around the optic. It shields the top, front, and sides of the sight to help guard the lens and emitter against drops and rough handling. Features: Host: Glock MOS pistols Optic footprint: Holosun 407C / 507C 7075 aluminum body, hard anodized finish TRU-SEAL O-ring screw sealing STUD-LOK mounting interface Top, front, and side optic protection Verify MOS generation coverage against the package before installing. Match the mount to a Holosun 407C or 507C footprint optic. 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.