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Osight

OSIGHT K 6 MOA Open Reflex Sight, RMSc Red/Green Dot Sight | Side-Load Battery, Motion Sensor, Micro Dot Sight for Pistol, Parallax-Free Compact Optic for Concealed Carry

  • Based on 501 reviews
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Availability: 15 left in stock
Fulfilled by Amazon
Arrives Friday, Aug 7
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Color: Red 6 MOA Dot


Features

  • 6 MOA Red Dot:A 6-MOA dot fosters quicker target acquisition and better visibility, making it ideal in high-stress situations. A larger dot adds consistency to presentation and target alignment.
  • Side-Loading Battery:Effortless battery replacement without removing the optic ensures hassle-free re-zeroing. A premium-grade battery features easy accessibility while maintaining steady performance.
  • RMSc Footprint:Designed for RMSc Footprint-cut, optics-ready slides. Non-RMSc slides require an adapter plate (not included). Please verify compatibility before purchase.
  • Motion Sensor Function:A motion sensor activates the optic at the slightest motion, and powers down after 3 minutes of inactivity to conserve battery.
  • Low Power Indication:If battery voltage drops below 2.2V, the reticle will quickly triple-flash once per minute to recommend an imminent battery replacement.

Description

The Osight K is a compact, high-performance open-sight reflex sight designed for concealed carry and tactical applications, enhancing your accuracy and confidence in every moment. The 6-MOA dot offers better visibility and faster target acquisition, making it ideal in high-stress situations. A larger dot ensures quicker presentation and target alignment, perfect for rapid engagements from the holster. The side-loading battery allows for easy replacement without removing the optic, while the RMSc footprint ensures compatibility with most optics-ready slides. With its automatic motion- activated power system, it instantly turns on with the slightest movement and enters a power-saving standby mode after 3 minutes of inactivity. A rugged CNC-machined 7075 aluminum housing guarantees durability, while its low-deck height enables co-witnessing with factory iron sights. Osight K offers multilayer reflective glass maximizes light transmission, reduces glare, and ensures optimal performance in any condition, making it a versatile optic for both professionals and everyday users.

Brand: Osight


Color: Red 6 MOA Dot


Style: Red 6 MOA Dot


Product Dimensions: 0.98"L x 0.98"W x 1.59"H


Sport: Hunting


Item Weight: 29 g


Material: Aluminum


Compatible Devices: Handgun


Mounting Type: Integral Mount


Thread Type: RMSc


Compatible Devices: Handgun


Mounting Type: Integral Mount


Thread Type: RMSc


Reticle Type: Dot


Item Dimensions L x W x H: 0.98"L x 0.98"W x 1.59"H


Item Weight: 29 g


Color: Red 6 MOA Dot


Product Style: Red 6 MOA Dot


Material Type: Aluminum


Brand Name: Osight


Sport Type: Hunting


Model Name: O-OSIGHTK-RD-300115


Manufacturer: Osight


Unit Count: 1 Count


Included Components: Adjustment Tool × 1, Battery Compartment Screw x 2, Cleaning Cloth × 1; User Manual × 1; Safety Warnings × 1; READ ME Card × 1, Osight K x 1, Osight Stickers × 1


Model Number: Osight K


Warranty Description: Lifetime Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Maybe the best RMSc for the money
Color: Red 6 MOA Dot
Have this mounted on a Canik MC9 prime, and it is a perfect and snug fit with the included screws. The buttons can be a little hard to press if you're wearing gloves, but otherwise they function quite well and have a nice tactile "bump" when you depress them. The glass is clear and easy to clean. The laser itself handles all light levels with ease; it gets brighter than the sun at max level, making it perfect for daytime training, while it offers multiple night-modes that I've found very useful in a variety of circumstances and training conditions. Additionally, the added circle and circle-dot reticles you can cycle to are clear and crisp, and I've had a lot of success with the circle dot (though I swear the dot itself sits a little below what should be the center...others say I'm crazy but idk) at longer ranges. It has survived 3 accidental drops on concrete and 3k rounds with no issues other than needing to reapply loktite a few days after first mounting it. I have not noticed any significant zero drift after reapplying the locktite and re-zeroing the pistol - thousands of rounds of various types with no issue. Battery life is outstanding so far, though they make it even easier to swap the battery out so no worries there. For the price, this should jump to the top of the list for anyone looking for an RMSc pattern pistol optic. A homerun for OSIght! ... show more
Reviewed in the United States on April 6, 2026 by Dan N
    • Another great red dot from osight.
Color: Red 6 MOA Dot
Another good product by osight. Absolute cowitness and direct mount to S&W shield X. Nice smooth finishing all over, clear and crisp dot. Easy controls. Mounting hardware provided and accurate to application. It is a little bit wider than some of the competition due to it thicker frame all around. Very well priced for what you get. ... show more
Reviewed in the United States on May 5, 2026 by Webster Escares
    • Love their lights and now I'm loving their sights.
Color: Red 6 MOA Dot
Had this for about 3 months on a Canik TP9 Elite SC. Installation was super easy. Have about 400 rounds through it and shot a Practical Pistol course. All Alphas except for 3 Charlies and 1 Delta. Accuracy is great and has held zero. Seems pretty durable, but I won't be on any battlefields anytime soon, so I'm sure it will handle what I plan to put it through. Co-witness with the Canik is great and 6 MOA is great for fast dot acquisition. ... show more
Reviewed in the United States on May 29, 2026 by S. Zemlo
    • Good optic at a very reasonable price
Color: Red 6 MOA Dot
Very pleased so far. Good build quality at a very competitive price. Prefer the large 6 MOA dot to smaller dots, much easier to pick up and and see. Shake-awake (motion-sensing) works well and should significantly extend the battery life. Easy to mount (make sure to use blue threadlocker on the mounting screws). Easy to adjust for elevation and windage. Side-mounted battery is a big plus. Some designs use a bottom-mounted battery, requiring removal, battery replacement, re-installation and re-zeroing just to change the battery. ... show more
Reviewed in the United States on April 2, 2026 by CW
    • Great optic especially at this price point
Color: Red 6 MOA Dot
Great optic. Sent in a nice box with tools and well organized screws in a plastic box, just a level up from most other optics manufacturers. Easy installation and simple to zero. I chose this over a Holosun that I previously purchased. The screw chart from the listing is a bit off but easy enough to figure out as it comes with several screws for options. ... show more
Reviewed in the United States on June 27, 2026 by J from TN
    • Fantastic New Red Dot RMSC Option
Color: Red 6 MOA Dot
Review Image by Mike A
Unboxing video and first impressions. The build quality seems very solid and has a nice clean sleek look to it. Packaging of the product by the manufacturer is 10/10 awesome. The item functions fantastic and seems like it will stand the test of time. Shake awake feature works great and 6MOA dot is a great size. Side load battery compartment is the only way to go! It was super easy to install with the RMSC footprint. It fit directly and very snug onto my hellcat (had to tap it on with rubber mallet). The only reason or 4 stars instead of 5 is that I have not been able to test it extensively with many many rounds and recoil. That and the fact that this is a relatively new item with a very short track record compared to some others, is why I gave it 4 stars. If this item measures up (the way I think it will), we will have a new competitor among the mid level red dots on the market. If OSIGHT backs up their products and keeps them at this affordable price point, they COULD end up taking over the market! ... show more
Reviewed in the United States on November 6, 2025 by Mike A
    • King of Budget Dots
Color: Red 6 MOA Dot
I was buying Cylee for my lower guns (Trijicon is on all my premier stuff, sorry but it’s the best and mosh durable) For the money, this Osight is incredible. Easy to use, align, and adjust. Fabulous value and crystal clear site picture. Highly recommend for your pistols under $1000.
Reviewed in the United States on May 28, 2026 by tfnsdbghr
    • Competitive shooter needs a new optic.
Color: Red 6 MOA Dot
I’m going to start out giving this optic a five star review. The 6MOA dot is perfect. The function seem to work perfectly and mounted to my Taurus TX 22 Toro perfectly. I will be using this system for USPSA rimfire matches, so it will get a lot of reps. Some reasons for this initial score are the included mounting screws. They are pre treaded with thread locker and include two of the most common metric and English thread sizes, and to add more versatility each size comes in two lengths, with three screws of each type. This is more than needed for RMSc mounts, nice touch Osight! Also the screws are packaged in very convenient and labeled plastic boxes. Over the top, but appreciated. Ohh almost forgot there are two spare battery compartment screws included, and a battery pre installed but not activated until the plastic insulator is removed. Now for my testing, it survived a 1M drop test while mounted to my pistol onto a thinly covered concrete floor. Impressive. Finally I purchased with my own money during the introduction sale. Thank you Osight. Out of the park. Update: I Shot a steel challenge this weekend. 8 stages with five strings per stage, over 200 rounds fired, very fast. I used the optic in bright sunlight, and didn’t have to run it on its brightest setting. Shake awake worked perfectly the optic was always ready to go. I found the dot easy to track once acquired. I shot the “Smoke and Hope” stage at a personal best of 13.68 seconds with my best string being 3.17 seconds for five trargets. This is the perfect companion for my new TORO TX22. ... show more
Reviewed in the United States on September 17, 2025 by Papa

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