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Olight Red Dot Sights
Olight's entry into the pistol optic market centers on the Osight platform — a lineup of reflex and enclosed-emitter red dot sights built around a feature set that addresses the biggest pain points in the category: battery management, reticle flexibility, and mounting compatibility. The magnetic charging cover — an industry first — lets you recharge the internal battery without removing the optic from the slide. The lineup covers both open and enclosed emitter configurations across the most widely used mounting footprints, including RMR, 407c/507c, and RMSc patterns. Every model in the Osight series has been validated through 10,000-round testing for zero retention, and all feature motion-activated wake and automatic shutoff after inactivity.
Osight
The base Osight is the model that started the platform — a 3 MOA open-emitter reflex sight on the RMR/407c/507c footprint with a built-in rechargeable lithium polymer battery and Olight's magnetic charging cover. The cover snaps over the optic magnetically, charges it via contact, and displays real-time battery levels for both the cover and the sight on a built-in indicator. A fully charged cover provides three full charges in 2.5 hours. Runtime on the lowest brightness setting reaches 70,000 hours. The 0.94 × 0.85-inch multi-coated lens provides a large sight picture for fast acquisition, and 12 brightness levels — 10 daylight and 2 night-vision-compatible — cover every lighting condition. Auto-sensing mode adjusts brightness based on ambient light, or you can lock to manual. The T6 aluminum housing is IPX6 rated and weighs 2.12 ounces. Available in red or green dot. If you want the simplest Osight with the largest window and the magnetic charging ecosystem, the base model is the entry point.
Osight X
The Osight X builds on the base Osight with two upgrades: a multi-reticle system and OAL housing. The reticle options expand to 3 MOA dot, 32 MOA circle, or both combined — three configurations switchable without powering down. OAL is Olight's proprietary aluminum alloy that delivers titanium-grade toughness and corrosion resistance at near-7075 weight, with a Level III anodized finish. The result is a noticeably lighter optic at 1.41 ounces — a half-ounce savings over the base Osight. The same 0.94 × 0.85-inch window, magnetic charging cover, and 407c/507c footprint carry forward, with runtime at 57,000 hours. Field-tested to 100,000 rounds for zero retention. If you want the circle-dot reticle option and lighter housing on a full-size footprint with the magnetic charging system, the X is the upgrade.
Osight C
The Osight C takes the full-size platform in a different direction — it drops the magnetic charging cover entirely in favor of a traditional side-loading CR1632 battery. That means no cover to carry, no charging cable, and battery swaps without removing the optic or losing zero. The trade-off is that the recharging convenience is gone, but runtime more than compensates — the red dot version reaches 100,000 hours, and the green dot version hits 130,000 hours. The multi-reticle system carries forward with 3 MOA dot, 32 MOA circle, or combined. The window is slightly different at 0.95 × 0.75 inches, and the housing is standard 7075-T6 aluminum at 1.48 ounces with IPX6 waterproofing. Ten brightness levels — 8 daylight and 2 NV. Motion sensor auto-wake with 3-minute shutoff. If you prefer a replaceable battery over rechargeable and want the longest possible runtime on a full-size footprint, the C is the answer.
Osight K
The Osight K is the compact-footprint entry model — a 6 MOA open-emitter dot on the RMSc footprint for subcompact and micro-compact slides like the P365, Hellcat, and G43X. The larger 6 MOA dot is a deliberate choice for defensive carry: it is faster to acquire under stress and more visible during rapid draw-to-presentation than a 2 or 3 MOA dot, making it ideal for self-defense distances. A side-loading CR1620 battery provides 63,000 hours of runtime and can be swapped without removing the optic. The 0.83 × 0.55-inch window, 7075 aluminum housing, and IPX6 rating are standard for the compact line. At 1.02 ounces and 1.59 inches long, the K adds minimal weight and keeps a low profile on subcompact slides. Ten brightness levels — 8 daylight and 2 NV — with a low-voltage indicator that triple-flashes when the battery drops below 2.2V.
Osight SE
The Osight SE is the enclosed-emitter version of the compact platform — same RMSc footprint and CR1620 side-loading battery as the K, but with a fully sealed emitter that blocks dust, rain, and debris from reaching the diode. The reticle upgrades to a multi-reticle system: 2 MOA dot, 32 MOA circle, or both combined. The aspherical lens delivers zero distortion and parallax-free performance through the 0.83 × 0.55-inch window. The enclosed design bumps waterproofing to IPX7 — submersible to one meter for 30 minutes. Runtime reaches 75,000 hours on the lowest brightness with dot only. At 0.97 ounces and 1.59 inches, the SE is fractionally lighter than the K with significantly more capability. The ultra-low deck height co-witnesses with most factory iron sights without requiring suppressor-height replacements. If you want enclosed-emitter protection and multi-reticle flexibility on a micro-compact gun with a standard replaceable battery, the SE is the current best option in the compact Osight line.
Osight S
The Osight S is the premium compact model — it combines the enclosed emitter and multi-reticle system of the SE with Olight's magnetic charging cover and OAL proprietary housing material. Reticle options are 2 MOA dot, 32 MOA circle, or combined. OAL delivers titanium-grade impact resistance at near-7075 weight with Level III anodized corrosion protection. The magnetic charging cover is scaled down for the RMSc platform and can fully recharge the optic three times per cover charge in 1.5 hours. Runtime on a single optic charge reaches 21,900 hours at level 3 with dot only. The 0.83 × 0.55-inch aspherical lens and 12 brightness levels — 10 daylight and 2 NV — carry forward. At 0.97 ounces, the S matches the SE in weight while adding the charging ecosystem and OAL toughness. If you want every Osight feature in the smallest possible package, the S is the top of the compact line.
Choosing an Osight
The first decision is footprint. If your slide is cut for RMR, 407c, or 507c, you are looking at the Osight, Osight X, or Osight C. If your slide is cut for RMSc — which covers most micro-compact carry guns — you are looking at the K, SE, or S. The second decision is emitter type. Open emitter sights are lighter and provide a marginally wider field of view, but the diode is exposed to the elements. Enclosed emitter sights seal the diode behind glass, making them impervious to rain, mud, and debris — the preferred choice for duty and carry guns that will see weather. The third decision is power. Magnetic charging cover models eliminate battery changes entirely and provide real-time charge monitoring, but they add the cost and bulk of the cover. Side-loading battery models offer longer raw runtime and simpler logistics — just carry a spare CR1620 or CR1632. Match the model to your platform, your carry environment, and your preference for charging convenience versus battery simplicity.
Osight Red Dot Sights — Spec Comparison
Full-size (RMR/407c/507c footprint) and compact (RMSc footprint) models. Side by side.
| Model | Reticle | Emitter | Footprint | Window | Power | Max Runtime | Brightness | Housing | Waterproof | Backup Iron | Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Full-Size — RMR / 407c / 507c Footprint | ||||||||||||
| Osight | 3 MOA dot | Open | RMR / 407c / 507c | 0.94 × 0.85 in | Magnetic charging cover | 70,000 hrs | 10 day + 2 NV | T6 aluminum | IPX6 | — | 2.12 oz / 60 g | 1.77 × 1.18 × 1.29 in |
| Osight X | 3 MOA + 32 MOA circle | Open | RMR / 407c / 507c | 0.94 × 0.85 in | Magnetic charging cover | 57,000 hrs | 10 day + 2 NV | OAL™ | IPX6 | — | 1.41 oz / 40 g | 1.77 × 1.18 × 1.29 in |
| Osight C | 3 MOA + 32 MOA circle | Open | RMR / 407c / 507c | 0.95 × 0.75 in | CR1632 (side-load) | 100,000 hrs | 8 day + 2 NV | 7075-T6 aluminum | IPX6 | — | 1.48 oz / 42 g | 1.77 × 1.18 × 1.18 in |
| Compact — RMSc Footprint | ||||||||||||
| Osight K | 6 MOA dot | Open | RMSc | 0.83 × 0.55 in | CR1620 (side-load) | 63,000 hrs | 8 day + 2 NV | 7075 aluminum | IPX6 | — | 1.02 oz / 29 g | 1.59 × 0.98 × 0.98 in |
| Osight SE | 2 MOA + 32 MOA circle | Enclosed | RMSc | 0.83 × 0.55 in | CR1620 (side-load) | 75,000 hrs | 8 day + 2 NV | 7075 aluminum | IPX7 | — | 0.97 oz / 28 g | 1.59 × 0.98 × 0.97 in |
| Osight S | 2 MOA + 32 MOA circle | Enclosed | RMSc | 0.83 × 0.55 in | Magnetic charging cover | 21,900 hrs | 10 day + 2 NV | OAL™ | IPX6 | — | 0.97 oz / 28 g | 1.18 × 0.83 × 0.55 in |
All models feature parallax-free performance, unlimited eye relief, 1 MOA per click adjustments, motion-activated wake, and 10,000+ round zero retention testing. Full-size models fit slides cut for the RMR/407c/507c pattern. Compact models fit RMSc-cut slides. Magnetic charging cover models include a USB-C rechargeable cover that charges the optic magnetically and displays real-time battery levels. OAL™ is Olight's proprietary aluminum alloy with titanium-grade toughness at near-7075 weight. Green chips indicate enclosed emitter, multi-reticle, or premium feature models. Runtime figures reflect lowest brightness setting, dot-only mode.