Steiner Optics released the MPS 2.0, the second generation of its Micro Pistol Sight enclosed-emitter red dot, on August 3 at the same $631.99 MSRP the original carried. The update targets the two criticisms most often leveled at the first-generation MPS — battery longevity and the size of the brightness-adjustment controls — without a price increase.

The core architecture is unchanged. The MPS 2.0 retains the fully enclosed emitter housing, the Aimpoint ACRO mounting footprint, and a 3.3 MOA red dot in a 21-by-16-millimeter objective window. Elevation and windage adjustments travel 90 MOA in one-MOA clicks, and the sight offers eight brightness settings including two dedicated night-vision-compatible modes. The housing is designed and engineered in Germany and rated for use on pistols, carbines, and shotguns.

Two things changed. First, the battery. The original MPS used a smaller, proprietary cell. The 2.0 moves to a CR2032 — the standard coin battery common to most competing enclosed emitters — and Steiner rates the updated electronics at more than 90,000 hours of runtime at brightness setting 4. At the brighter setting 5, the projection is over 27,000 hours. In practical terms, a shooter running the MPS 2.0 in everyday carry or competition can go years between battery changes under normal use. A magnetic cover handles battery access. Second, the buttons. The original adjustment controls were functional but small enough to be difficult to locate under a heavy glove or when drawing from concealment. The MPS 2.0 buttons are noticeably larger and more tactile, designed to be found and pressed quickly under stress.

The enclosed-emitter segment has grown steadily since the NFA tax on suppressors fell to zero at the start of 2026, adding more suppressed hosts to the market. Suppressed pistols and carbines push more carbon and gas back through the action, and an enclosed design protects the LED and emitter glass from the fouling that accumulates over sustained suppressed sessions — a real-world advantage that open-emitter designs cannot match without additional hardware. The Firearm Blog, Recoil, and the NRA's Shooting Sports Journal each ran first-look coverage at launch, with reviewers consistently noting the battery and button upgrades as the defining improvements.

Competing enclosed emitters from Aimpoint, Holosun, and EOTech are priced above $631.99. Steiner holding the MPS 2.0 at the original price — while adding meaningful hardware improvements — keeps the sight competitive as the enclosed-emitter category continues to expand. The MPS 2.0 is available now through authorized Steiner dealers and directly at steiner-optics.com.