First Look: Osight C vs. Osight K Red Dot Sights

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.

Osight C: Versatile and Feature-Rich

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.

Osight K: Compact and Purpose-Built for Concealed Carry

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.

Comparison and Recommendations

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.