Viridian Rfx 45 Hi Mnt 1/3 Co-Witnss
The Viridian RFX 45 high mount 1/3 co-witness red dot sight mount is purpose-built for shooters running an RFX 45 enclosed emitter optic on a Picatinny rail platform. This high mount positions your red dot in true lower-third co-witness alignment, letting you see through your existing iron sights while keeping your dot in the sight picture—a setup that matters whether you're running a duty-grade carbine, a tactical shotgun, or a precision rifle where backup iron sights stay in play. It's the kind of no-nonsense hardware that builds confidence in a layered defensive or competition sight system.
Viridian mounts are engineered to tight tolerances for rock-solid zero retention. The black finish is durable and low-profile, and the Picatinny interface is the modern standard, so compatibility with most AR platforms, modern sporting rifles, and tactical shotguns is straightforward. You get the mounting platform itself—the optic is sold separately—which means you can integrate this into an existing Viridian RFX 45 setup or plan one from scratch.
If you're already committed to the RFX 45 ecosystem and want a sight picture that honors both your primary optic and your iron backup, this high-mount configuration delivers a practical, proven co-witness solution. It's clean, reliable, and built to work hard.
Key Features
- High mount position for lower 1/3 co-witness with iron sights
- Designed specifically for Viridian RFX 45 enclosed emitter optics
- Picatinny rail compatible for broad platform support
- Durable black finish
- Precision-engineered for zero retention
Specifications
| Brand | Viridian Weapon Technologies |
| Product | RFX 45 High Mount |
| Mount Type | Picatinny Rail |
| Co-Witness Height | Lower 1/3 |
| Compatible Optic | Viridian RFX 45 Enclosed Emitter |
| Finish | Black |
Frequently Asked Questions
What optic is this mount compatible with?
This mount is designed specifically for the Viridian RFX 45 enclosed emitter red dot sight. It will not fit other optics or RFX models.
What does lower 1/3 co-witness mean?
Lower 1/3 co-witness positions your red dot sight in the lower third of your field of view when aiming through iron sights. This allows you to see both your optic reticle and your iron sight picture simultaneously, giving you a backup aiming reference if your primary optic fails.
Will this fit my AR or tactical rifle?
This mount is built on Picatinny rails, which are standard on most modern AR-platform rifles, tactical shotguns, and similar firearms equipped with Picatinny-spec top rails. Verify your firearm has a Picatinny interface before ordering.
Do I need to buy the red dot separately?
Yes. This is the mount only. You'll need to purchase a Viridian RFX 45 enclosed emitter optic separately to complete the setup.

