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.