HolosunRed Dot Sight
Holosun HS507K X2 Red Dot Sight Multi-Reticle System
- Reticle
- red Multi-Reticle System — selectable 2 MOA dot, 32 MOA circle,...
- Window
- 0.58 × 0.77 in (14.7 × 19.6 mm) viewing window
- Footprint
- Holosun K (RMSc) footprint, for RMSc-cut slides and RMSc-pattern plates
- Illumination
- 12 brightness settings — 10 daylight and 2 night-vision compatible
In stock — 7–10 business day delivery
Tracked delivery, estimated 7–10 working days
Want to know when it's back? Email us and we'll let you know
Multi-buy savings
Mix any optics and lights — applied automatically
- 5%2 items
- 10%3 items
- 15%4 or more
Applied automatically at checkout — no code needed. Accessories such as tailcaps, switches and mounts aren't included.
- Shipped from the UK with tracked delivery
- 30-day returns on unused items
- Warranty support — contact us first
Delivery
Every order is shipped from the UK with tracked delivery. Estimated delivery time is 7–10 working days, and you will receive tracking details by email as soon as your order is on its way.
Returns
Unused items in their original packaging can be returned within 30 days. Email info@opticstrader.co.uk first and we will confirm the return details.
Warranty
Every product is new and boxed. If anything goes wrong, contact us first and we'll help with a manufacturer warranty claim where one applies.
The Holosun HS507K X2 Red Dot Sight (HS507K-X2) is a 1x open-reflex pistol red dot sight on the Holosun K (RMSc) footprint, with the Multi-Reticle System — a 2 MOA red dot, a 32 MOA circle, or both together as a circle-dot — behind a 0.58 × 0.77 in (14.7 × 19.6 mm) window.
It puts the full 507-series reticle set on a housing small enough for a slimline slide. The 32 MOA circle gives a fast close-range reference, the 2 MOA dot is the precise one, and switching between them is a button press. Shake Awake sleeps the reticle when the pistol is idle and wakes it on movement, X2 Lock Mode stops the settings being altered by accident, and the side-loading CR1632 tray is rated at up to 50,000 hours.
How it compares
For a single uncluttered aiming point on the same footprint, the HS407K X2 red dot sight with the 6 MOA dot is the simpler option. The HS507K X2 with the ACSS Vulcan reticle swaps the Multi-Reticle System for a fixed chevron and ring. In green, see the HE507K X2 green dot sight; on a full-size slide, the HS507C X2 red dot sight carries the same reticle on the RMR footprint with Solar Failsafe. Browse all RMSc footprint red dot sights and the wider Holosun pistol red dot sight range.
Ideal for
- Slimline and subcompact pistols with an RMSc-cut slide
- Section 1 long-barrelled pistols and revolvers held on a UK firearm certificate
- Shooters who want the circle-dot option without a full-size optic on the slide
- Airsoft GBB compacts and training pistols used all year outdoors
Key features
- Reticle: red Multi-Reticle System — selectable 2 MOA dot, 32 MOA circle, or circle-dot
- Window: 0.58 × 0.77 in (14.7 × 19.6 mm) viewing window
- Footprint: Holosun K (RMSc) footprint, for RMSc-cut slides and RMSc-pattern plates
- Illumination: 12 brightness settings — 10 daylight and 2 night-vision compatible
- Electronics: Shake Awake motion activation with last-setting memory
- Controls: X2 Lock Mode prevents accidental brightness and reticle changes
- Battery: side-loading CR1632 tray, up to 50,000 hours of runtime
- Adjustment: 1 MOA per click windage and elevation, parallax-free
| Optic Type | Open reflex pistol red dot sight, 1x (non-magnified) |
| Reticle | Multi-Reticle System — 2 MOA dot / 32 MOA circle / circle-dot |
| Reticle Colour | Red |
| Magnification | 1x, parallax-free |
| Window Size | 0.58 × 0.77 in (14.7 × 19.6 mm) |
| Footprint | Holosun K footprint (RMSc pattern) |
| Illumination | 12 brightness settings — 10 daylight / 2 night-vision compatible |
| Battery | CR1632 in a side-loading tray, up to 50,000 hours |
| Power Management | Shake Awake motion activation; X2 Lock Mode |
| Click Value | 1 MOA per click |
| Parallax | Parallax-free |
| Eye Relief | Unlimited (non-critical eye relief) |
| Housing | Aluminium |
| MPN | HS507K-X2 |
Is the Holosun HS507K X2 an RMR or an RMSc footprint optic?
The Holosun HS507K X2 Red Dot Sight uses the Holosun K footprint, which is the RMSc pattern, so it fits RMSc-cut slides and RMSc-pattern adapter plates. It is not an RMR-footprint optic; the RMR-footprint equivalent with the same reticle is the HS507C X2.
Will the Holosun HS507K X2 fit a SIG P365 or a Glock 43X?
Both of those pistols use the RMSc optic cut, which matches the Holosun K footprint on the HS507K X2, so the sight fits that cut directly. Confirm your slide is the optics-ready RMSc variant before ordering.
What reticle options does the Holosun HS507K X2 have?
The Holosun HS507K X2 uses the Multi-Reticle System, which switches between a 2 MOA red dot on its own, a 32 MOA circle on its own, and both together as a circle-dot, all within a 0.58 × 0.77 in (14.7 × 19.6 mm) window.
Does the Holosun HS507K X2 have solar power?
No. The Holosun HS507K X2 runs from a CR1632 cell alone; Solar Failsafe is fitted to the larger C-series models such as the HS507C X2. Shake Awake motion activation is what supports the 50,000-hour runtime rating on the K-series.
What is X2 Lock Mode on the Holosun HS507K X2?
Lock Mode is an X2-generation feature that disables the buttons on the Holosun HS507K X2 once brightness and reticle are set, so the settings cannot be knocked out of position in a holster or a bag.
What battery does the Holosun HS507K X2 use and how is it changed?
The Holosun HS507K X2 uses one CR1632 cell in a side-loading tray, so the cell can be replaced with the optic still mounted and zeroed.
Every order is shipped from the UK with tracked delivery, with an estimated delivery time of 7–10 working days. Unused items in their original packaging can be returned within 30 days for a full refund.