Holosun HS-407K-X2 – Overview –
The HS407K X2 is an open reflex optical sight designed for subcompact pistol applications. The HS407K X2 improves on the previous version by adding Lock Mode which was first introduced in our 2018 LEM pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes.
Additional features include Holosun’s Red Super LED with up to 50k hour battery life, a crisp 6MOA dot, and Shake Awake. The durable housing is made from 7075 Aluminum, uses Holosun’s K footprint, and houses the 1632 battery in a side-mounted tray for easy replacement when needed. The HS407K X2 is a direct for P365X/XL, and requires an adapter plate for slides with a four-boss interface.
Items Dimensions (in inches)

In the Box
- Multi Tool
- User Manual
- Lens Cloth
– TECH & FEATURES –
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Shake Awake™ -
Multilayer Reflective Glass
Holosun HS-407K-X2 Multilayer Reflective Glass
– Specification –

- 6 MOA Dot Reticle
- Up to 50,000 Hours Battery Life (Setting 6)
- 12 Brightness Setting: 10 DL & 2 NV Compatible
- Convenient Tray Battery Compartment
- Parallax-free & Unlimited Eye Relief
Holosun HS-407K-X2 PHYSICAL SPECS
| Window Size | 0.58×0.77 |
| Dimension (in) | 1.6×0.98×0.95 |
| Weight (oz) | 1 |
MECHANICAL SPECS
| Housing Material | 7075 T6 Aluminum |
| Surface Finish | Anodize |
| Adjustment per Click | 1 MOA |
| W&E Travel Range | ±30 MOA |
ENVIRONMENT SPECS
| Storage Temperature | -40℃~70℃ |
| Working Temperature | -30℃~60℃ |
| Submersion | IP67 |
| Vibration | 5000G |
The Holosun HS-407K-X2 red dot sight offers a significant upgrade for subcompact pistol owners seeking enhanced accuracy and faster target acquisition. This optic features a crisp 6 MOA red dot, providing a clear and easily visible aiming point that facilitates rapid engagement. Holosun’s innovative Shake Awake™ technology ensures the sight is ready when you need it, automatically powering on with motion and conserving the impressive 50,000-hour battery life when static. The robust construction of the HS-407K-X2, utilizing durable 7075 T6 aluminum and boasting an IP67 waterproof rating, guarantees reliable performance in various environmental conditions. Furthermore, the inclusion of a Lock Mode prevents unintentional setting changes during use, offering peace of mind in critical situations. The side-mounted battery tray simplifies the process of replacing the CR1632 battery without the need to remove the optic from the firearm, a thoughtful design element for ease of maintenance.
Designed with a focus on seamless integration, the HS-407K-X2 utilizes the popular Holosun K footprint, making it a direct fit for Sig Sauer P365X/XL slides. For other subcompact pistols with a four-boss interface, an adapter plate is necessary, highlighting the optic’s versatility across different platforms. Shooters will appreciate the parallax-free viewing and unlimited eye relief, which contribute to improved situational awareness and shooting comfort. The sight offers twelve brightness settings, including ten daylight and two night vision compatible modes, ensuring optimal reticle visibility across a wide spectrum of lighting conditions. This adaptability makes the HS-407K-X2 a versatile optic suitable for both daytime range use and low-light tactical applications.
In summary, the Holosun HS-407K-X2 red dot sight stands out as a compact yet powerful optic tailored for subcompact pistols. Its combination of a clear 6 MOA red dot, extended battery life courtesy of Shake Awake™ technology, rugged construction, and user-friendly features like the Lock Mode and side-mounted battery tray make it a compelling choice for concealed carry and everyday carry firearms. The compatibility with the Holosun K footprint, particularly for P365X/XL owners, further enhances its appeal. For those prioritizing a lightweight, durable, and high-performing red dot sight that doesn’t compromise on functionality, the HS-407K-X2 presents an excellent solution for enhancing shooting precision and speed.


yeelinn (verified owner) –
Shipped really quick to me and mounted straight onto my p365 XL with no issues. Great little optic!
Brent Kuzman (verified owner) –
Great pistol red dot. Used on a shadow systems first now as a back up off set red dot on a rifle
Steve H (verified owner) –
great dot at a great price. i run this on a wager cut glock 19 and it’s perfect.