Holosun 507C X3 | RMR Footprint Multi-Reticle Optic | Granite Ridge Defense

The Holosun 507C X3 introduces a refined evolution of the classic 507C platform, combining a reinforced housing, updated branding, and advanced brightness management in a compact optic built for modern pistol setups. Designed around the popular RMR footprint, the X3 series delivers a low-profile solution optimized for everyday carry, duty use, and consistent range performance.

At the center of the 507C X3 is Holosun’s Multi-Reticle System, giving shooters the flexibility to run a precise 2 MOA dot, a 32 MOA circle, or a combined reticle to match speed or precision needs. A forward-facing photodiode works with Solar Failsafe to automatically adjust brightness as lighting conditions change, while manual brightness control with memory and lockout modes provides full control when needed.

Powered by a CR1632 battery with up to 100,000 hours of runtime on setting six, the 507C X3 is engineered for long-term reliability. With Shake Awake technology and a rugged 7075-T6 aluminum housing rated IP67, it delivers dependable performance without added bulk or complexity.

For shooters who want a modern pistol optic that blends versatility, durability, and smart power management, the HS507C-X3-RD-MRS sets a new standard in performance optics.

Granite Ridge's Take

The Holosun 507C X3 is the updated generation of the proven 507C platform, retaining the versatile Multi-Reticle System while adding a refined, reinforced 7075-T6 aluminum housing and updated automatic-brightness control. Its a great optic for anyone needing an rmr footrint with the option of the MRS system. 

Buying & Compatibility Notes

The 507C X3 uses an RMR footprint and is intended for full-size pistol applications. Its selectable reticle system offers a 2 MOA dot, 32 MOA circle, or circle-dot combination. Confirm whether your slide accepts the RMR footprint directly or requires an adapter plate.

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