Forward Controls Design OPF-M17/M18 Sig P320 Mounting Plate – ACRO

Original price was: $72.50.Current price is: $68.87.

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SKU: OPF-G-M17-ACRO UPC: 686162348008

Product Description

OPF-G, ACRO is a drop in adapter for superb Aimpoint ACRO sights.

Machined in 4140 steel and black oxide coated, OPF-G, ACRO is a new member of Forward Control’s OPF (Optics Platform, Forward Controls) line. FCD again eschews aluminum for this application and continues to use steel as other OPF plates, they prefer steel plates for steel screws. 4140 steel costs more and takes longer to machine, FCD uses it extensively on other products. Forward Controls does not deem light-weight to be of particular use in this application, but consider reliability and durability far more useful and important qualities.

FCD will stress the importance of holding the LCI (loaded chamber indicator) with your finger or a piece of tape while removing the plate from the slide, the LCI spring is very small and fragile, and easily damaged.

OPF-M17, ACRO is identical to the Tangodown SSM-01, ACRO. Forward Controls doesn’t like rebranding but does make exceptions when the products in question are outstanding, and they share the same values as the companies that make them. Forward Controls has known Tangodown and its folks for a long time, they carry Tangodown products, and are proud to be able to put their logo on the SSM-01, ACRO, and make it OPF-M17, ACRO.

OPF-G-ACRO is shipped with two 3/32 Allen screws (torque value: 12 to 14 in·lb), a 3/32 Allen key, and a packet of VC-3.

Proudly designed and made in the USA.


  • OPF-M17, ACRO, and RSD are compatible with MIL-issued M17/M18.

Confused by the myriad of P320 models and slides? You’re not alone, never have we seen so many variations for a single model. The compatibility list will continue to be updated as SIG releases yet more P320 models and slides.


  • RX


  • Civilian M17/M18
  • Compact
  • XCompact
  • Legion
  • Romeo1 Pro Cut
  • DPP Pro Cut
  • Pro Cut
  • AXG Cut

ATTENTION: Steiner MPS users: MPS’s recoil lug underneath the sight may vary in width and be slightly wider than that of the ACRO. Should this be the case, firmly push the MPS on the plate, or gently tap on the sight until the MPS fully seats.
For the new M17/M18 and SIG P320 with the Delta Point Pro cut, FCD is proud to offer OPF-G, ACRO, RSD (rear sight dovetail).

OPF-M17, ACRO, RSD is compatible with MIL issued M17/M18.




Technical Information

Color / Pattern


4140 Steel


Black Oxide

Firearm Compatibility

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit