Rear Sight In Front of Optic, .373 Height

The Apex Optic Mount is designed to securely mount the Aimpoint® ACRO series or Steiner MPS optics to the slide of the Sig Sauer P320 Legion, P320 M17/M18, and other models featuring the -R2 slide cut. The Apex Optic Mount comes either with or without an integrated rear sight. The integrated rear sight in front of the optic also acts as a gas shield to keep class cleaner longer.

The Apex Optic Mount with integrated rear sight for the R2 slide cut is set up to co-witness in the bottom 25% of the optic window. Requires a tall front sight for co-witness. Two different sight height packages are available. Select option based on barrel length.

- Designed to fit the slide of the Sig Sauer P320 with an R2 slide cut

- Works with models equipped with the factory Loaded Chamber Indicator

- Sights regulated for POA=POI at 15 yds with 124 gr. NATO ammunition (applies to optic mounts with integrated rear sight only)