COMPATIBILITY Fits RMR cut slides without threaded posts. Compatible with Osight K, Osight S, Osight SE, and sights marked with the RMSc footprint. PRECISION FIT Designed for listed K/RMSc-footprint optics, featuring improved fit, extended locating posts, custom-length screws, and a low-profile design for secure mounting under recoil. SECURE MOUNTING Extended locating posts and custom-length screws offer stable support and assist in maintaining zero. MATERIAL CNC machined from aerospace-grade titanium with a resilient black finish. LOW PROFILE Ultra-low one-piece design