The Holosun 507CPICMOUNT is a genuine Holosun Picatinny rail mount for RMR-footprint optics — the 407C X2, 507C X2, 507C X3, 507COMP and 508T X2 — machined from aluminium with the correct bosses and screws for Holosun's RMR-pattern sights.
It takes an optic designed for a pistol slide and puts it on a rail instead, which is how most of these sights end up on a shotgun rib, a pistol-calibre carbine or a rimfire in the UK. It clamps to any MIL-STD-1913 rail section.
How It Compares
This mount is for full-size RMR-pattern optics. If your sight is a K-series on the smaller RMSc footprint, or an enclosed 509T, the 509T Picatinny mount in 0.82in low profile and the 509T Picatinny mount in 1.63in lower-1/3 cover the 509 series. Browse all RMR footprint red dot sights, shotgun red dot sights and red dot sight mounts, or check the pistol red dot footprint compatibility chart if you are unsure which pattern your optic uses.
Ideal For
- Practical shotgun and 3-Gun, mounting an RMR-pattern dot to a rib rail
- Rimfire and .22LR rifles with a Picatinny rail
- Pistol-calibre carbines and airsoft builds using a slide-pattern optic
- Moving an existing 507C or 508T off a pistol and onto a rail-equipped host
Key Features
-
Optic Footprint: RMR pattern — fits Holosun 407C, 507C, 507COMP and 508T
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Rail: clamps to any Picatinny MIL-STD-1913 rail section
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Material: machined aluminium
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Hardware: correct optic mounting screws supplied
Technical Specifications
| Optic Footprint |
RMR footprint (Holosun 407C / 507C / 507COMP / 508T) |
| Rail |
Picatinny (MIL-STD-1913) |
| Material |
Machined aluminium |
| Hardware |
Optic mounting screws included |
| MPN / UPC |
507CPICMOUNT / 810047071532 |
What's Included
- Holosun 507CPICMOUNT Picatinny mount
- Optic mounting screws
Warranty
Covered by Holosun's manufacturer warranty, handled in the UK by Xtreme Tactical.
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 optics fit the Holosun 507CPICMOUNT?
The Holosun 507CPICMOUNT fits optics with the full-size RMR footprint, which on the Holosun range means the 407C X2, 507C X2, 507C X3, 507COMP and 508T X2.
Will the Holosun 507CPICMOUNT fit my 507K or 407K?
No. The 507K and 407K use the smaller RMSc, or K, footprint, and the Holosun 507CPICMOUNT is machined for the larger RMR pattern. A K-series optic will not bolt to it.
What rail does the Holosun 507CPICMOUNT clamp to?
The Holosun 507CPICMOUNT clamps to any Picatinny rail cut to MIL-STD-1913, which covers shotgun rib rails, carbine receiver rails and rimfire rails.
Are the mounting screws included with the Holosun 507CPICMOUNT?
Yes. The correct optic mounting screws for Holosun's RMR-pattern sights are supplied with the Holosun 507CPICMOUNT.
