The Reptilia ROF-90 is a drop-in upgrade for magnified scope mounts. Built for the Reptilia AUS Mount or Geissele Super Precision 30mm optic mount, it adds a 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. Product Specifications For use with Reptilia AUS Mount or Geissele Super Precision Mount Machined from billet 7075-T6 aluminum MIL-STD, Type III, hardcoat anodized 34gr Made in USA