Reptilia LLC 100018 ROF-90 Black Anodized Geissele 34mm Super Precision & Trijicon RMRThe 34mm ROF 90 is a drop in upgrade for the Reptilia AUS Mount or Geissele Super Precision. The ROF 90 adds a mounting point at 90 (12: 00) for a Trijicon RMR to provide for quick transition to a non magnified optic for close range target engagement. Additionally, the RMR can be zeroed for use with use with subsonic cartridges such as 300 AAC Blackout, while allocating the magnified optic for use with supersonic ammunition. Each ROF model is designed