Fit an Aimpoint ACRO or Steiner MPS on a Picatinny rail
How an ACRO or MPS enclosed dot mounts to a Picatinny rail.
Direct fitAn ACRO or Steiner MPS mounts on a Picatinny rail through an ACRO-plate Picatinny mount. It clamps the ACRO plate and does not fit an RMR mount.
OpticAimpoint ACRO or Steiner MPSACRO footprint
interface
Mountclosed body clamps the plate, not a screw-down RMR cut
seats on
RailPicatinny rail (MIL-STD-1913)5.23 mm slot, 10.01 mm pitch
What to fit it with
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The ACRO clamps its enclosed body onto an ACRO plate, so a Picatinny mount for it carries that plate. The Steiner MPS shares the ACRO plate, so the same mount takes either sight.
It is not the open RMR pattern. An ACRO will not screw onto an RMR mount, so choose an ACRO-plate mount for the rail.
Related fitments
- ›Aimpoint ACRO footprintthe pattern
- ›Trijicon RMR footprintdoes not interchange
- ›Picatinny rail (MIL-STD-1913)the base
Sources: Red dot footprint families, OpticFootprint · RMR vs RMSc vs ACRO footprints, JSD Supply · MIL-STD-1913 Picatinny rail dimensions, Wikipedia