Radian Guardian optic guard for the Holosun EPS, designed for Glock MOS-cut slides. Steel housing wraps the optic to take impacts in place of the EPS body - critical for duty/EDC carry where the optic is exposed to holster wear, impacts, and weight-bearing falls. Compatibility: Slide cut: Glock MOS (any Gen 4/5 MOS-equipped pistol) Optic: Holosun EPS (closed-emitter) Includes: Guardian optic guard + mounting hardware. 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.