Choosing the right red dot sight for your handgun can be tricky. The Holosun 507C X2 and 507K X2 are popular options that offer different features for various needs. These compact sights provide reliable performance for both recreational and defensive use.
The main difference between the Holosun 507C X2 and 507K X2 is their size and compatibility with different handgun types. The 507C X2 is larger and designed for full-sized pistols, while the 507K X2 is more compact and suited for smaller, single-stack handguns. Both models feature multi-reticle systems and long battery life, but they differ in brightness settings and window size.
When picking between these two sights, consider your handgun’s size, intended use, and personal preferences. The 507C X2 offers a wider field of view and solar failsafe technology, while the 507K X2 provides a slimmer profile for easier concealment. Each sight has its strengths, making them suitable for different shooting scenarios.
Key Takeaways
- The 507C X2 is better for full-sized pistols, while the 507K X2 suits smaller handguns
- Both sights offer multi-reticle systems and long battery life
- Your choice depends on gun size, intended use, and personal preferences
Holosun 507C X2 Overview
The Holosun 507C X2 is a compact, durable red dot sight designed for pistols and other firearms. It offers multiple reticle options and long battery life in a rugged aluminum housing.
Key Features and Specifications
The 507C X2 features a multi-reticle system with three options: a 2 MOA dot, a 32 MOA circle, or both combined. It uses a CR2032 battery that can last up to 50,000 hours on medium settings. The sight has 12 brightness settings, including 2 night vision compatible modes.
The window size measures 0.63 x 0.91 inches, providing a clear sight picture. It weighs approximately 1.5 ounces, making it lightweight for everyday carry. The 507C X2 is compatible with RMR footprint mounting plates, increasing its versatility.
Design and Durability
Built from 7075 T6 aluminum, the 507C X2 is both lightweight and strong. It measures 1.78 x 1.15 x 1.15 inches, fitting well on most pistols. The housing is anodized for extra protection against wear and corrosion.
The 507C X2 features a side-loading battery tray, allowing for easy battery changes without removing the sight or losing zero. It’s water-resistant up to 1 meter for 30 minutes and can operate in temperatures from -22°F to 140°F.
A solar failsafe feature helps power the sight in bright conditions, extending battery life. The sight also includes Shake Awake technology, which turns the dot on with movement and off after a period of inactivity.
Holosun 507K X2 Overview
The Holosun 507K X2 is a compact red dot sight designed for concealed carry and smaller pistols. It offers durability and advanced features in a small package.
Unique Selling Points
The 507K X2 stands out with its multiple reticle options. Users can choose between a 2 MOA (Minute of Angle) dot, a 32 MOA circle, or both combined. This versatility allows for quick target acquisition in various situations.
The sight features Shake Awake technology. This conserves battery life by turning the unit on when it detects movement. It also has Solar Failsafe, using ambient light as a backup power source.
Another key feature is the side-loading battery tray. This allows users to change the battery without removing the sight from the gun, maintaining zero.
Build Quality
The 507K X2 is built to withstand tough conditions. It’s made from 7075 aluminum, known for its strength and resistance to corrosion. This material choice ensures the sight can handle recoil and impacts.
The lens is made of scratch-resistant glass. It has multi-layer coatings to reduce glare and improve clarity. This helps maintain a clear sight picture in various lighting conditions.
Holosun designed the 507K X2 to be water-resistant. It can withstand submersion up to 1 meter for 30 minutes. This makes it reliable in wet conditions or accidental water exposure.
Comparative Analysis
The Holosun 507C X2 and 507K X2 differ in key areas like size, performance, and reticle options. These factors impact their suitability for different firearms and shooting scenarios.
Size and Fit Comparison
The Holosun 507C X2 is larger than the 507K X2. It measures 1.54 inches in height, making it ideal for full-size and compact pistols. The 507C X2 fits most double stack handguns.
The 507K X2 is smaller and lighter, weighing just 1 ounce. It’s designed for subcompact pistols and concealed carry weapons. Its compact size makes it less noticeable on smaller firearms.
Both optics are made from durable 7075 T6 aluminum. The 507C X2 has a larger window size of 0.63 x 0.91 inches, while the 507K X2’s window measures 0.58 x 0.77 inches.
Performance Under Different Conditions
Both the 507C X2 and 507K X2 feature Holosun’s Shake Awake technology. This conserves battery life by turning the optic on when it detects motion.
The optics have similar battery life. They last about 20,000 hours using the MRS reticle on setting 6. With only the 2 MOA dot, battery life extends to 50,000 hours.
Both models perform well in various lighting conditions. They offer multiple brightness settings to adapt to different environments. The larger window of the 507C X2 may provide a slight advantage in target acquisition speed.
Reticle Options and Visibility
The 507C X2 and 507K X2 offer the same reticle options:
- 2 MOA dot
- 32 MOA circle
- 32 MOA circle with 2 MOA dot
These options allow shooters to choose the best reticle for their needs. The 2 MOA dot is great for precision, while the 32 MOA circle aids in quick target acquisition.
The larger window of the 507C X2 may provide a wider field of view. This can be helpful for situational awareness. The 507K X2’s smaller window is still effective for its intended use on subcompact pistols.
Both optics have multiple brightness settings. This helps maintain visibility in various lighting conditions. The user can adjust the brightness to suit their environment and personal preference.
Mounting Options and Compatibility
The Holosun 507C X2 and 507K X2 offer different mounting options to suit various firearms. Their compatibility and installation methods vary based on the optic’s size and footprint.
Firearms Compatibility
The Holosun 507C X2 uses the RMR footprint, making it compatible with a wide range of firearms. It fits well on larger handguns, especially double-stack models. The 507C X2 can also be mounted on rifles and shotguns with the appropriate adapter.
The 507K X2 is designed for smaller, slimmer firearms. It uses a modified RMSc footprint, making it ideal for compact and subcompact pistols like the Sig Sauer P365 and Springfield Hellcat. This optic is perfect for concealed carry weapons due to its smaller size.
Installation Tips
When installing the 507C X2, ensure the mounting surface is clean and free of debris. Use the provided screws and follow the manufacturer’s torque specifications. For the 507K X2, some pistols may require an adapter plate for proper fitment.
It’s crucial to use a thread-locking compound on the mounting screws for both optics. This prevents loosening due to recoil. After installation, check and re-tighten the screws after firing 100-200 rounds.
Always zero the optic after mounting. Start at close range (10-15 yards) and gradually move to longer distances for precise adjustment.
Pros and Cons
The Holosun 507C X2 and 507K X2 each have unique strengths that make them suitable for different applications. These optics offer distinct advantages in terms of size, battery life, and compatibility with various firearms.
Advantages of the 507C X2
The Holosun 507C X2 is well-suited for full-sized handguns. It features a larger window size of 0.63 x 0.91 inches, providing a wider field of view. This makes target acquisition faster and easier, especially for shooters with less experience.
The 507C X2 is compatible with RMR footprints, making it versatile for different mounting options. It offers multiple reticle choices, including a 2 MOA dot, a 32 MOA circle, or both combined.
Battery life is impressive, lasting up to 50,000 hours when using only the 2 MOA dot. The optic also includes a solar failsafe feature, which can power the device in emergencies.
Benefits of the 507K X2
The Holosun 507K X2 is designed for subcompact handguns. Its smaller size (0.58 x 0.77 inch window) makes it ideal for concealed carry weapons.
Despite its compact design, the 507K X2 maintains excellent battery life, matching the 507C X2 with up to 50,000 hours using the 2 MOA dot. It also features the same multi-reticle system as its larger counterpart.
The 507K X2’s lower profile reduces snagging risks during draws from concealment. It’s compatible with many popular subcompact pistols, making it a versatile choice for everyday carry.
Both optics feature shake awake technology, preserving battery life when not in use. They’re constructed from durable 7075 T6 aluminum, ensuring longevity in various conditions.
Frequently Asked Questions
The Holosun 507c X2 and 507k X2 differ in size, reticle options, compatibility, power features, and mounting footprints. These factors impact their suitability for different firearms and user preferences.
What are the main differences in size between the Holosun 507c X2 and the 507k X2 models?
The Holosun 507c X2 is larger than the 507k X2. It measures 1.78 inches in length, 1.24 inches in width, and 1.54 inches in height.
The 507k X2 is more compact, designed for smaller pistols. This size difference affects their compatibility with different firearms.
Can you compare the reticle options available for the Holosun 507c X2 versus the 507k X2?
Both the 507c X2 and 507k X2 feature Multi-Reticle Systems. They offer a 2 MOA dot, a 32 MOA circle, or a combination of both.
Users can switch between these reticle options to suit their shooting preferences and situations.
Are there any compatibility considerations when choosing between the Holosun 507C X2 and the 507K X2 for compact firearms?
The 507k X2 is designed for smaller, compact pistols. It fits well on single-stack or subcompact double-stack handguns.
The 507c X2 is better suited for full-size and compact double-stack pistols. It may be too large for some subcompact firearms.
Is there a difference in battery life or power options between the Holosun 507c X2 and 507k X2 sights?
The 507c X2 has a solar failsafe feature and both auto and manual brightness modes. This can help extend battery life.
The 507k X2 lacks the solar failsafe and only has manual brightness adjustment. Both models use CR1632 batteries.
Can the Holosun 507c X2 be easily mounted on a Glock 19 without any modification?
The Holosun 507c X2 can be mounted on a Glock 19 with the proper mounting plate. No modification to the slide is typically required.
Many Glock 19 models come with an optics-ready slide that accepts RMR footprint optics like the 507c X2.
What are the mounting footprint differences between the Holosun 507C and the 507K version X2?
The 507c X2 uses the RMR footprint, which is common among many full-size and compact pistols.
The 507k X2 uses a modified RMSc footprint, designed for smaller pistols. This difference affects which firearms each model can be mounted on without adapters.