Enclosed-Emitter

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Close up view of an Eschelon pistol lying on a table with a COA sight attached. The gun isfacing left.

Springfield Armory Expands Aimpoint COA Across Pistols — SHOT Show 2026

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Springfield Armory is moving quickly to support the Aimpoint COA optic, adding factory A‑Plate slide cuts across several pistol lines starting in March.

Steiner MPS: Enclosed-Emitter Micro Pistol Sight mounted to an ACRO cut Brownells slide mounted on my Glock 19

Steiner MPS: Enclosed-Emitter Micro Pistol Sight Review

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Micro red dot sights (MRDS) have taken over the firearm industry, and consumers are now demanding factory firearms to be compatible with these systems. While this is great to see for the benefits red dots provide, the new trend seems to be pushing towards enclosed-emitter optics.