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The Osight C and Osight K are two compelling red dot sights designed for shooters seeking reliability, versatility, and performance. With distinct features tailored to different use cases, both optics offer excellent value. Below, I compare their key features, performance, and suitability to help you decide which sight best fits your needs.
The Osight C ($179.99 MSRP) is designed for shooters who prioritize flexibility and a larger field of view. Its 0.95'' × 0.75'' window, paired with advanced multi-coated lenses, delivers exceptional clarity and light transmission, making it ideal for rapid target acquisition in dynamic shooting scenarios, such as competitive shooting or tactical applications. The larger window gives it an edge over the Osight K, which has a more compact design but a smaller viewing area.
One of the standout features of the Osight C is its versatile reticle system, offering a 3 MOA dot, a 32 MOA circle, or a combination of both. This allows users to switch between precise aiming for longer ranges and faster target acquisition for close-quarters engagements. In contrast, the Osight K features a single 6 MOA dot, which is better suited for quick, close-range targeting but less adaptable for varied distances.
The Osight C’s universal RMR footprint (compatible with 407c/507c) and Osight Picatinny mounts make it highly adaptable, fitting both pistols and rifles. This broad compatibility surpasses the Osight K, which uses the RMSc footprint tailored for compact, optics-ready pistol slides. The Osight C’s side-loading CR1632 battery compartment is a practical touch, allowing swaps without removing the optic or losing zero—a feature shared with the Osight K (using a CR1620 battery).
The motion sensor on the Osight C activates the reticle upon movement and powers it down after three minutes of inactivity, optimizing battery life. This is identical to the Osight K’s motion sensor, ensuring both sights are energy-efficient.
The Osight K ($159.99 MSRP) is a compact red dot sight designed with concealed carry and self-defense in mind. Its 6 MOA dot is larger than the Osight C’s 3 MOA option, making it easier to pick up quickly in high-stress situations, such as close-range defensive shooting. However, this larger dot sacrifices some precision at longer ranges compared to the Osight C’s finer reticle options.
The Osight K’s RMSc footprint ensures compatibility with many optics-ready compact pistols, making it a go-to choice for concealed carry enthusiasts. While it lacks the rifle compatibility of the Osight C, its smaller profile is a significant advantage for users prioritizing low weight and minimal bulk on their handguns.
Like the Osight C, the Osight K features a side-loading battery (CR1620) for easy swaps without re-zeroing. It also includes a low power indication feature, where the reticle triple-flashes when the battery voltage drops below 2.2V, a useful addition not mentioned for the Osight C. This ensures users are alerted to replace the battery before it fails, which is particularly valuable in critical self-defense scenarios.
Both sights share core conveniences like side-loading batteries and motion sensors, but they cater to different needs. The Osight C excels in versatility, with its larger window, multiple reticle options, and universal compatibility, making it ideal for shooters who need a single optic for both pistols and rifles or engage targets at varying distances. Its $143.99 sale price offers strong value for a feature-packed sight.
The Osight K, at $127.99 during the sale, is a budget-friendly choice for concealed carry users who value compactness and quick target acquisition. Its 6 MOA dot and low power indication make it reliable for close-range defensive use, though it’s less flexible than the Osight C for other applications.
If you’re a competitive shooter or need an optic for both pistol and rifle platforms, the Osight C is the better choice due to its broader compatibility and reticle versatility. For concealed carry or compact pistol setups, the Osight K’s streamlined design and larger dot make it a practical, cost-effective option.
Both sights are currently available at a 20% discount on Amazon until 11:59:59 PM EST on September 19th, with purchase links below!
Regardless of your choice, both the Osight C and Osight K deliver reliable performance and smart features at their respective price points.
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commented on 10/16/2025 11:40 AM
Nice!
commented on 10/16/2025 07:56 AM
Got you guys with likes thanks
Dash
commented on 10/15/2025 07:48 AM
O yeah!
commented on 10/14/2025 11:20 PM
Olight, osight, oh my
Dash
commented on 10/14/2025 04:49 PM
Likes are cool. Everyone likes likes!
Dash
commented on 10/13/2025 10:54 AM
Right on!
commented on 10/13/2025 12:08 AM
Thanks for the likes
commented on 10/12/2025 10:58 PM
Sup guys
commented on 10/12/2025 10:47 AM
What are the chances they will take the acog away as an option for points once one of us actually has enough to get it?
Dash
commented on 10/12/2025 06:42 AM
Fun!
commented on 10/11/2025 10:54 AM
Looks like we are back
Dash
commented on 10/11/2025 04:35 AM
Still going?
commented on 10/10/2025 08:12 AM
Didn’t get points on my first comment
commented on 10/10/2025 08:07 AM
Thanks mrodolph likes help alot
commented on 10/09/2025 10:10 PM
Please like
commented on 10/09/2025 07:58 AM
Went to GLOCK GIVEAWAY
Dash
commented on 10/09/2025 04:23 AM
Very interesting topic.
commented on 10/08/2025 06:40 AM
Thanks jkinger77 .Thanks all others this is great points maker.
Dash
commented on 10/08/2025 06:18 AM
Indeed. Like.
commented on 10/07/2025 10:00 PM
Likes make the world go round
commented on 10/07/2025 08:00 AM
Thanks guys likes really help!
Dash
commented on 10/07/2025 07:15 AM
Morning!
Dash
commented on 10/06/2025 11:00 AM
Alright!
commented on 10/06/2025 08:18 AM
Keeping it going
commented on 10/06/2025 07:25 AM
Join l need alike today also
commented on 10/05/2025 10:59 PM
Thanx for no likes today :/
commented on 10/05/2025 09:22 AM
Awesome stuff!
Dash
commented on 10/05/2025 08:55 AM
Awesome!
commented on 10/05/2025 07:40 AM
Thanks guys building up points.
commented on 10/05/2025 12:42 AM
Cool
commented on 10/04/2025 11:16 PM
I liked everyone's comments, like mine, help me out.
commented on 10/04/2025 07:53 AM
Need a like guys
Dash
commented on 10/04/2025 04:43 AM
Good morning!
commented on 10/04/2025 12:33 AM
sup guys, leave a like
commented on 10/03/2025 07:56 AM
Nice
Dash
commented on 10/03/2025 07:03 AM
Alright!
commented on 10/03/2025 01:01 AM
Pittsburgh
commented on 10/03/2025 01:00 AM
Bus
commented on 10/02/2025 07:24 AM
Thanks Juan what city state you in I am in Eureka Missouri.
Dash
commented on 10/02/2025 05:19 AM
Is there a way to search seller? Can’t click on usernames here.
commented on 10/01/2025 11:08 PM
You saw my ads didn't you? Go to contact seller
commented on 10/01/2025 10:45 AM
need some likes
commented on 10/01/2025 08:03 AM
This never gets old.Not much of a writer.Where you located l don’t know how to send you messages.
Dash
commented on 10/01/2025 07:43 AM
Cool beans.
commented on 09/30/2025 11:37 PM
Why dont you send me a message?
commented on 09/30/2025 07:58 AM
Thanks Juan great guy
Dash
commented on 09/30/2025 06:21 AM
Beautiful.
commented on 09/30/2025 06:16 AM
I liked all the comments before this, how about a couple in return? Thanks!
commented on 09/29/2025 11:56 PM
Please like
commented on 09/29/2025 08:20 AM
Thanks Juan this is too easy
Dash
commented on 09/29/2025 06:25 AM
Wow!
Dash
commented on 10/01/2025 07:43 AM
!
commented on 09/28/2025 11:48 PM
In goin for the acog
commented on 09/28/2025 08:08 AM
Than As all ways Juin get that mag deal.
Dash
commented on 09/28/2025 07:47 AM
Yessir.
commented on 09/28/2025 03:04 AM
Please like for points
commented on 09/28/2025 12:07 AM
Howdy guys
Dash
commented on 09/27/2025 07:30 AM
Nice.
commented on 09/27/2025 12:31 AM
機関銃がいい
commented on 09/26/2025 07:43 AM
I got you today
commented on 09/25/2025 10:32 PM
I didnt get a like Sam
commented on 09/25/2025 07:47 AM
This optics sell cheap.Thanks for likes .
commented on 09/24/2025 11:10 PM
How's everyone doin
commented on 09/24/2025 10:37 PM
comment for points, please like.
commented on 09/24/2025 07:32 AM
Did order mag deal with points thanks guys
commented on 09/23/2025 09:51 PM
Sup guys
commented on 09/23/2025 11:15 AM
Good information
commented on 09/23/2025 08:10 AM
Thanks Juin this is too easy
commented on 09/22/2025 10:25 PM
Feel free to hit me up
commented on 09/22/2025 06:20 AM
Thanks Juin mg34 cool
commented on 09/21/2025 09:02 PM
You got it mr carl n the other guy
commented on 09/21/2025 07:13 AM
Thanks Joey mothers 1
commented on 09/21/2025 02:23 AM
Interesting
commented on 09/21/2025 02:17 AM
Huh
commented on 09/21/2025 12:07 AM
Search "nodak spud build"
commented on 09/20/2025 09:16 AM
Thanks for likes mrodoph and others easy extra points.
commented on 09/20/2025 12:44 AM
Looks good
commented on 09/19/2025 10:27 PM
Please like
commented on 09/18/2025 07:57 AM
I have several Olights lights been good.Thanks for likes easy five extra points.
commented on 09/18/2025 12:31 AM
Points comment, please like
commented on 09/17/2025 07:07 AM
Thanks for likes waiting on something to use points.
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