The Reptilia ROF-45 is a drop-in upgrade for magnified scope mounts. Available for the Geissele Automatics Super Precision optic mount, it adds a 90Adeg mounting point for a Trijicon RMR to provide a fast, close-range optic to your magnified scope. Each ROF model is designed to minimize each optic's distance from the host scope's centerline, while ensuring enough clearance that the sight picture isn't obscured. Compatible with: TrijiconA(R) - RMR & SRO HolosunA(R) Technologies - HS407, HE407, HS507, HE507, & HE508 Series Mfg: Reptilia Corp