Holosun HS407K X2 Reflex Sight Red Dot
Quick Check: Confirm Your Optic and Footprint.
Reticle: 6 MOA Dot.
Footprint: Holosun K series / modified RMSc.
Housing: Durable aluminum construction.
Best Use: Concealed carry, defensive pistols, and micro-compact optics-ready handguns.
The Holosun HS407K X2 is a compact pistol red dot built for shooters who want a fast, simple, and dependable optic for everyday carry. Its crisp 6 MOA dot is easy to pick up quickly, making it a strong choice for defensive shooting and close-range target acquisition.
Designed for slim and micro-compact pistols, the HS407K X2 combines a low-profile footprint with long battery life, durable construction, and Holosun’s Shake Awake technology. It gives shooters the core features they need in a carry optic without overcomplicating the sight picture.
Technical Specifications
- Reticle: 6 MOA Dot
- Magnification: 1x
- Battery Type: CR1632
- Battery Life: Up to 50,000 hours
- Footprint: Holosun K series / modified RMSc
- Housing Material: Aluminum
- Battery Access: Side-loading tray
- Additional Feature: Shake Awake and Lock Mode
Why Choose the HS407K X2?
A carry optic should be quick to acquire, easy to live with, and dependable over time. That is where the HS407K X2 stands out. The larger 6 MOA dot is especially well suited for fast shooting at defensive distances, where a clean aiming point matters more than extra reticle choices.
- ✔ Large 6 MOA dot for fast target acquisition
- ✔ Compact profile ideal for concealed carry pistols
- ✔ Shake Awake helps preserve battery life
- ✔ Side-loading battery tray allows changes without removing the optic
- ✔ Lock Mode helps prevent accidental setting changes
- ✔ Durable housing built for daily carry and range use
Mounting and Compatibility
The HS407K X2 uses the Holosun K series footprint, which is closely related to the modified RMSc pattern. Many optics-ready micro pistols are cut for this footprint, making it a popular option for concealed carry handguns and slim defensive pistols.
Depending on your pistol, this optic may mount directly or may require an adapter plate. Always verify your slide cut before installation to ensure proper fitment.
If you need help choosing the correct mount, browse our Holosun K series mounting plates here.
Having problems understanding fitment? Check out our Red Dot Fitment Guide
Built for Everyday Carry
The HS407K X2 was built around the needs of everyday carriers. Its compact shape helps keep bulk down on smaller pistols, while its durable construction is made to handle daily wear, repeated holstering, and regular range time.
For shooters who want a clean, uncluttered sight picture, the HS407K X2 offers a straightforward aiming solution that is fast, intuitive, and dependable.
Installation Notes
Before mounting, make sure the optic cut or adapter plate is clean and free of oil or debris. Use the correct screws supplied with the optic or mounting plate, apply a small amount of thread locker if recommended, and tighten to the manufacturer’s torque specification.
Holosun typically provides screws with the optic. Screw fitment can vary depending on the firearm or adapter plate being used.
Frequently Asked Questions
What is the difference between the HS407K X2 and the 507K?
The main difference is the reticle. The HS407K X2 uses a simple 6 MOA dot, while the 507K offers multiple reticle options.
Will this fit my pistol?
If your pistol is cut for the Holosun K series or modified RMSc footprint, it may fit directly. If it is not, you will need a compatible mounting plate.
Is the HS407K X2 a good choice for concealed carry?
Yes. Its compact size, large 6 MOA dot, long battery life, and durable construction make it a strong option for concealed carry and defensive handgun use.
Does the battery need to be removed from the optic for replacement?
No. The HS407K X2 uses a side-loading battery tray, which allows battery changes without removing the optic from the slide.
