Holosun
Holosun 509T X2
Enclosed emitter micro red dot for maximum durability
Quick Specs
- Price
- $430
- Weight
- 1.6 oz
- Brand
- Holosun
- Category
- pistol-optic
Features
- •2 MOA dot + 32 MOA circle
- •Enclosed emitter
- •Titanium housing
- •RMR adapter available
Capability Boosts
Recommended For
+24 more
Where to Buy
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Holosun HE509T X2 Enclosed Reflex Optical Red Dot Sight, 2x 0.66 x 0.9 in, Red LED, Black, HE509T-RD X2
Price History
90-day low $429.99 · at low nowCompatibility Tags
Overview
The Holosun 509T X2 addresses the primary weakness of open-emitter pistol optics: debris blocking the emitter and causing dot loss. The enclosed emitter design houses the LED inside a protective tube, ensuring the dot remains visible even if the lens is covered with mud, blood, or other contaminants. This makes the 509T the most reliable choice for defensive use.
The titanium housing provides exceptional durability while keeping weight minimal. The same multi-reticle system from the 507C is present, offering the 2 MOA dot, 32 MOA circle, or both. Solar failsafe and Shake Awake are included, providing the same power management benefits. The side-loading battery compartment maintains the 507C's user-friendly design.
The 509T uses its own footprint but includes an RMR adapter plate in the box, allowing mounting to any RMR-cut slide. The adapter does add height, so direct 509T cuts are preferred when available. For shooters who prioritize reliability above all else, the enclosed emitter design justifies the price premium over the 507C.
Key Features
- Enclosed emitter prevents debris blocking dot
- Titanium housing for extreme durability
- Multi-reticle system with all 507C options
- Solar failsafe and Shake Awake
- Side-loading CR1632 battery
- Includes RMR adapter plate
- Lock mode prevents accidental changes
- 12 brightness settings including 2 NVD
Pros
- +Enclosed emitter maintains dot through debris
- +Titanium housing extremely durable
- +Same proven multi-reticle system
- +Includes RMR adapter for compatibility
- +Most reliable design for defensive use
- +Solar and Shake Awake included
Cons
- −Higher price than open-emitter options
- −RMR adapter adds height
- −Proprietary footprint requires adapter
- −Slightly heavier than 507C
- −Smaller window than open designs
Detailed Specifications
- Reticle
- 2 MOA dot / 32 MOA circle / Both
- Magnification
- 1x
- Battery Type
- CR1632 (side-loading)
- Battery Life
- 50,000 hours (setting 6)
- Waterproof Rating
- IP67
- weight
- 1.59 oz
- Length
- 1.77 inches
- Mount Type
- 509T footprint (RMR adapter included)
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