The Olight Osight K is a compact open-emitter red dot sight built on the industry-standard RMSc / K footprint. It is designed for slimline, compact and subcompact pistols used for concealed carry, self-defense, home defense and range work.
The 6 MOA red dot is large and easy to pick up on the draw, which makes it well suited to defensive and close-range shooting. A side-loading CR1620 battery lets you replace the cell without removing the optic from the slide, so your zero stays intact. Runtime is up to 75,000 hours on the lowest setting.
A motion sensor turns the optic off after 3 minutes of inactivity and wakes it when movement is detected. When battery voltage drops below 2.2V, the reticle triple-flashes once per minute as a low-power warning. Memory function remembers your last brightness setting.
The housing is machined from 7075 aluminum with a hard-anodized finish and is rated IPX7 waterproof. Side buttons control power and brightness and are usable with gloves. Low deck height supports co-witness with suppressor-height or optic-ready iron sights on many slides.
Key Specifications:
- Reticle: 6 MOA Red Dot
- Brightness: 10 settings (including 2 Night Vision)
- Battery: CR1620 (side-loading)
- Battery Life: up to 75,000 hours (low)
- Footprint: RMSc / K
- Material: 7075 Aluminum
- Waterproof: IPX7
- Dimensions: approx. 40 × 25 × 25 mm
- Weight: approx. 27 g (with battery)
- Warranty: 5 years
Compatible Firearms (RMSc / K footprint)
The Osight K mounts to pistols cut for the Shield RMSc or Holosun K footprint, or to optics-ready slides using an RMSc adapter plate. Always confirm plate, screw length and torque (typically 15—17 in-lbs with medium/blue threadlocker).
Glock
- G43X MOS
- G48 MOS
- Aftermarket RMSc-cut slimline Glock slides
Sig Sauer
- P365 OR
- P365 XL
- P365 XMACRO
- P365 Fuse
Springfield Armory
- Hellcat OSP
- Hellcat Pro OSP
- XD-S Mod.2 OSP
Smith & Wesson
- M&P9 Shield Plus OR
- Equalizer
Canik
- METE MC9 / MC9L / MC9LS
- TP9 Elite SC
- METE SFT (adapter plate as required)
CZ
- P-10 C / similar compact models only if RMSc-cut or plated (many P-10 OR slides are RMR — use Osight C / XE / XR instead)
- P-09 C (where RMSc compatible)
Beretta
- APX A1 Carry (adapter plate as required)
Other popular slim / compact platforms
- Ruger MAX-9
- Ruger RXM (RMSc pin set)
- Kimber R7 Mako OR
- Mossberg MC2sc
- Taurus GX4 Carry
- PSA Micro Dagger
- IWI Masada Slim
- Shadow Systems CR920 / CR920P
- Many aftermarket RMSc-cut slides and Glock 43X/48 clones
Also works with
- Osight RMR-to-RMSc adapter plate (to run the K on an RMR-cut slide)
- Most third-party RMSc / K adapter plates
Not a direct fit (use Osight C / XE / XR RMR models instead)
Full-size and compact RMR guns such as Glock 17/19/45 MOS, Sig P320 RMR slides, Canik SFx Rival / TP9 SFx, Walther PDP, HK VP9, CZ Shadow 2 / P-10 RMR, Shadow Systems MR920/DR920, PSA full-size Dagger, and similar RMR platforms.
If your pistol is not listed, it will still work if the slide is RMSc- or K-cut, or you have the correct RMSc adapter plate. Contact TorchSA if you need help matching plate and screws.
What's Included:
- 1 × Osight K Red Dot Sight
- 1 × CR1620 Battery
- Mounting screws
- Adjustment tools
- User manual
The Osight K delivers a large 6 MOA dot, easy side-load battery changes and true RMSc compatibility in a light, low-profile package. Ideal for concealed carry, home defense and compact pistols. Available at torchsa.com.
