Sig P320 R2 Slide Cut Aimpoint Acro Optic Mount by Apex

*We highly recommend using the Apex Super Clamp to expand the clamping range of your MPS optic

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 112-009-RS-357 & 112-009-RS-373 only)

For Use In These Guns

Works on the Sig Sauer pistols with a rev2 (-R2) slide cut, including the P320 XFIVE Legion, P320-M17, P320-M18, P320 XFULL, P320 XCARRY, P320 XCOMPACT, and P320 XVTAC

   - Any Sig P320 pistol with "-R2" in the SKU *EXCLUDING the AXG models

Part# 112-009: Does not include integrated rear sight and will fit any P320 pistol with R2 slide cut.

Part# 112-009-RS-357: Includes integrated rear sight in front of the optic and accompanying front sight(.357" blade height). Select this option for P320 models with a 5.0” barrel (i.e. Legion). 

Part# 112-009-RS-373: Includes integrated rear sight in front of the optic and accompanying front sight(.373" blade height). Select this option for P320 models with a 4.7” or shorter barrel (i.e. M17 or M18).

Part# 112-019-RS-357: Includes integrated rear sight behind the optic and accompanying front sight(.357" blade height). Select this option for P320 models with a 5.0” barrel (i.e. Legion). 

Part# 112-019-RS-373: Includes integrated rear sight behind the optic and accompanying front sight(.373" blade height). Select this option for P320 models with a 4.7” or shorter barrel (i.e. M17 or M18).

Does Not Fit These Guns

Not for use in the Sig Sauer P320 models with RX or RX Pro (RXP) slide cuts. 

Not for use in the Sig Sauer P320 AXG models (uses RX Pro cut).  

See parts 112-011 and 112-012 for models with RX or RX pro slide cuts.

What's Included

• 1 ea. Apex Optic Mount for the Aimpoint® ACRO Series or Steiner MPS Optics

• 2 ea. Mounting Screws - Thread Locking Patch pre-applied (torque to 20 in-lb only)

• 1 ea. Tall Front Sight (applies to options with integrated rear sight only)