Shield Sights SMS/RMS Picatinny Mount with Triple Height Spacers

Shield’s SMS and RMS sights are built around a small footprint that bolts straight to a slide, which leaves rifle and shotgun shooters needing an adapter. This is that adapter: an aluminum body that clamps to a Picatinny rail and accepts the sight’s own mounting pattern directly, with no intermediate plate.

Three height spacers come with it, so the dot can sit low over a shotgun rib or high enough to co-witness with AR height irons. Aluminum keeps the weight down, which is the whole reason to run a small reflex sight in the first place. Fitment is specific to the Shield SMS and RMS footprint, so check which sight you have. The screw pattern does not interchange with other brands.