The Holosun HE507K X2 is a compact green-dot optic built for concealed carry on slim and subcompact pistols. It uses the RMSc footprint, so it fits carry guns like the SIG P365, Glock 43X/48 MOS, Springfield Hellcat and S&W Shield Plus. The green emitter is often easier to pick up in bright daylight than red.
Holosun's Multi-Reticle System lets you switch between a 2 MOA dot, a 32 MOA circle, or the circle-dot combined. Shake Awake keeps it ready for years, and the X2 series adds Lock Mode to prevent accidental setting changes.
How It Compares
It fits the slim RMSc footprint — confirm your slide cut in our RMR vs RMSc guide. Browse more in Holosun pistol red dots, green dot sights and sealed enclosed options. Setting up a carry gun? Read best optics for concealed carry.
Ideal For
- Concealed carry and subcompact pistols
- Everyday carry (EDC)
- Slim, single-stack handguns
Key Features
- Multi-Reticle System (2 MOA dot / 32 MOA circle / circle-dot)
- Green Super LED, up to 50,000 hours
- Shake Awake motion activation
- Lock Mode prevents accidental adjustment
- Side-loading battery tray
- 7075-T6 aluminium, RMSc (Holosun K) footprint
Technical Specifications
| Reticle |
MRS — 2 MOA dot / 32 MOA circle (green) |
| Magnification |
1x (parallax-free) |
| Window Size |
0.58 × 0.77 in |
| Footprint |
RMSc (Holosun K) |
| Battery |
CR1632 — up to 50,000 hours |
| Brightness |
12 settings (10 day / 2 NV) |
| Click Value |
1 MOA |
| Housing |
7075-T6 aluminium |
| Eye Relief |
Unlimited |
What's Included
- Holosun HE507K-GR-X2 green dot sight
- Multi-tool
- Lens cloth
- User manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Holosun's warranty.
Frequently Asked Questions
Which pistols does it fit?
Any RMSc-cut carry pistol — SIG P365, Glock 43X/48 MOS, Springfield Hellcat, S&W Shield Plus and similar. Confirm your slide cut first.
Green or red?
Many shooters find green easier to acquire in daylight; the HE507K is the green version of the popular 507K.
What is Lock Mode?
It disables the buttons so your brightness/reticle settings can't change accidentally in the holster.
Does it have solar backup?
No — the K-series runs on the CR1632 battery with Shake Awake for long runtime.
