The ROF-90 is a drop-in upgrade for the Reptilia AUS Mount or Geissele Super Precision 34mm magnified optic mounts. The ROF-90 adds options for close-in target engagement and passive aiming with night vision. The ROF-90 for an Aimpoint ACRO or Steiner MPS at 90 (12:00) to add a close-range optic to your magnified scope. Additionally, the ACRO or MPS 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.