The Holosun HE509T-GR-X2 is a closed-emitter green dot optic designed for carry, duty, and harsh environment use. This model features Holosun’s Multiple Reticle System (MRS), allowing users to toggle between a precise 2 MOA dot, a 32 MOA circle, or a combination of both in green illumination. The fully enclosed emitter design protects against debris, water, and environmental interference, making it highly reliable in adverse conditions.

Constructed from titanium with a black hardcoat anodized finish, the 509T-GR-X2 combines rugged durability with a compact footprint. It uses a side-loading CR1632 battery offering up to 50,000 hours of runtime, supplemented by Solar Failsafe for constant power under ambient light. Shake Awake automatically activates the optic with motion and powers it down when idle to conserve battery.

• Reticle: Green 2 MOA dot, 32 MOA circle, or circle-dot

• Brightness Settings: 12 total (10 daylight, 2 night vision compatible)

• Power Source: CR1632 battery (side-loading) + Solar Failsafe

• Battery Life: Up to 50,000 hours (dot only, setting 6)

• Power Features: Shake Awake, Solar Failsafe

• Emitter Type: Fully enclosed

• Housing Material: Titanium

• Lens: Multicoated glass

• Mounting Footprint: 509T proprietary

• Water Resistance: IP67

• Window Size: 0.66" × 0.9"

• Weight: 1.72 oz