C&H Precision mounting plate that fits a Holosun K-series red dot (407K, 507K) or RMSc-footprint micro to the Glock 43, 43X, or 48 slide. Designed for the slim-frame single-stack 9mm platform where MOS plates won't fit. Compatibility: Slides: Glock 43, 43X, 48 (requires optic-cut slide) Optics: Holosun 407K, Holosun 507K, RMSc-pattern micros Includes: mounting plate + screws. 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.