The Holosun HS507K X2 is a Compact Red Dot Sight built for handguns that are often used for concealed carry. It sits low on the slide so it doesn’t snag on clothing or holsters. The optic is an Open Reflex Sight, which keeps the viewing window clear and fast to pick up in rapid draw situations. The body is made from durable 7075 T6 aluminum, so it can handle daily use, recoil, and rough handling without losing zero.

This model uses the Multi-Reticle System (MRS) which lets you choose between a single dot or a Circle Dot Reticle. Some shooters like the circle for quick aim at close range, while others prefer the single dot for more precise shots. You can switch based on how you shoot and what the lighting looks like. It also includes Shake Awake, which turns the sight on when it senses motion and puts it to sleep when still. You can adjust how long it waits before powering down, or you can turn the feature off and run it like a standard always-on optic. When running continuously, the battery can last up to 50,000 hours.

The optic has a Law Enforcement Model setting that includes Lock Mode. Lock Mode stops unintentional button presses when holstering or drawing. Manual Mode lets you set brightness yourself instead of letting the auto sensor decide. This is useful if you train under controlled lighting or if you already know what brightness works best for you.

Some shooters call this model the Holosun 507K X2, while others refer to it as the Holosun 507 comp. Many also simply describe it as a Holosun pistol red dot, especially when suggesting it as an upgrade for small carry pistols.

Features:

• Motion-activated Shake Awake
• Solar backup support for extended runtime
• Choice of dot-only or circle-plus-dot aiming
• Lock Mode to prevent accidental button presses
• Rugged aluminum housing
• Clear window with easy eye alignment

Available at EuroOptic for shooters who want a dependable sight that suits compact carry handguns without adding bulk.