A steel optic plate with an integrated rear sight dovetail that mounts an Aimpoint ACRO P-1 or P-2 or a Steiner MPS on civilian M17/M18 and SIG P320 slides with the DeltaPoint Pro cut.
The OPF-M17, ACRO, RSD is a drop-in adapter precision machined from 4140 steel to the tight tolerances the Aimpoint ACRO footprint requires. RSD stands for rear sight dovetail: the plate carries its own dovetail so a rear backup sight can be fitted behind the optic. It is a TangoDown design (SSM-03) that Forward Controls Design offers under its own name.
Key features
-
Integrated rear sight dovetail — Lets a rear iron sight be installed on the plate itself.
-
4140 steel — Steel rather than aluminium, chosen for reliability and durability with steel screws.
-
In-spec ACRO footprint — Machined to Aimpoint's ACRO specification.
Compatibility and fitment
- Not compatible with military-issued M17/M18 pistols. It works only with the civilian versions of the M17 and M18.
- Compatible: P320 X-Five Legion, Legion Carry and slides with the DP cut.
- Not compatible: P320 Pro Cut, sub-compact, X Carry, AXG, Spectre Comp, RX, Max and Grayguns slides.
- The slide must have the groove at the front of the optic pocket; none of the plates will work without it.
- The integrated rear sight dovetail is made for commonly available Glock-pattern rear sights; Truglo makes P320 backup sights specifically for TangoDown/FCD plates. Do not force a SIG rear sight into the dovetail — it will damage the plate.
- Sights: guaranteed to work only with the Aimpoint ACRO P-1 and P-2 and the Steiner MPS. Other sights sold as ACRO-footprint have not been tested and are not supported.
- Steiner MPS: the recoil lug under the MPS can be slightly wider than that of the ACRO. If so, push the sight firmly onto the plate or tap it gently until it seats fully.
- The supplied T20 Torx plate-to-slide screws do not sit flush with the plate; this is normal. Allen-head screws that sit flush are also supplied for Steiner MPS users.
- When removing the factory optic cover plate, hold the loaded chamber indicator (LCI) down with a finger or a piece of tape: its spring is very small, fragile and easily damaged.
Technical specifications
| Material |
4140 steel |
| Plate-to-slide torque |
25 in·lb (2.8 N·m) |
| Sight mounting screw torque — ACRO P-1/P-2 |
26 in·lb (2.9 N·m) |
| Sight mounting screw torque — Steiner MPS |
18 in·lb (2.0 N·m) |
| Country of manufacture |
USA |
In the box
- 1 × OPF-M17, ACRO, RSD plate
- 2 × plate-to-slide screws, M4-0.7 × 6 mm
- 1 × packet of Vibra-Tite VC-3 threadlocker
Model information
| Brand |
Forward Controls Design |
| Model |
OPF-M17, ACRO, RSD — civilian M17/M18 and SIG P320 plate with rear sight dovetail for Aimpoint ACRO P-1/P-2 and Steiner MPS |
| MPN |
OPF-M17, ACRO, RSD |
