Holosun Enclosed Reflex Multi-Reticle Titanium Housing Red Dot Sight - HE512T-RD
The HE512T-RD is a versatile open reflex optic. HE512T-RD features a housing made of Grade 5 Titanium and includes an absolute co-witness mount (1.41" dot height). HE512T-RD is packed with Holosun innovation including Solar Failsafe, Shake Awake, MRS (Multi-Reticle System), Red Super LED with up to 50k hour battery life, with 10 daylight and 2 night vision compatible intensity settings.
Features
- Multi-Reticle System: Circle Dot; 2 MOA Dot; 65 MOA Circle
- Up to 50,000 Hours Battery Life (Setting 6)
- 12 Brightness Setting: 10 DL & 2 NV Compatible
- Convenient Tray Battery Compartment
- Completely Enclosed Design & Titanium Housing
- Parallax-free & Unlimited Eye Relief
Specifications
- Reticle: 2 MOA Dot & 65 MOA Circle
- Light Wavelength: 650nm
- Reticle Color: Red
- Magnification 1x
- Power Source: Battery
- Brightness Setting: 10 DL&2 NV
- Housing Material: Titanium
- Surface Finish: Titanium
- Adjustment per Click: 0.5 MOA
- W&E Travel Range: ±50 MOA
- Window Size: 0.91x1.26
- Dimension (in): 3.35x1.63x1.7
- Submersion: IPX8
- Weight (oz): 9.17
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
What Our Experts Think
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Rugged Titanium Construction: The titanium housing delivers outstanding durability while keeping weight low, making it ideal for demanding environments.
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Fully Enclosed Design: Protects the emitter from dust, rain, mud, and debris for enhanced reliability in harsh conditions.
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Multi-Reticle Versatility: Switch between a 2 MOA dot, 65 MOA circle, or circle-dot combination to suit different shooting preferences and applications.
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Large Viewing Window: Provides a wide field of view for faster target acquisition and improved situational awareness.
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Solar Failsafe & Long Battery Life: Solar backup and efficient power management help ensure dependable performance when it matters most.
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Built for Hard Use: Waterproof construction, shake-resistant design, and premium materials make it well-suited for professional, tactical, and defensive use.
Q&A
Q: What makes the HE512T-RD different from standard red dot sights?
A: The HE512T-RD features a rugged Grade 5 titanium housing and an enclosed design that helps protect the emitter from dust, dirt, and harsh weather conditions.
Q: What reticle options are available?
A: Holosun's Multi-Reticle System allows users to switch between a 2 MOA dot, 65 MOA circle, and Circle-Dot combination for different shooting applications.
Q: Does the HE512T-RD have Shake Awake technology?
A: Yes. Shake Awake automatically powers the optic on when motion is detected and helps extend battery life when not in use.
Q: Is this optic suitable for harsh environments?
A: Absolutely. The titanium construction and enclosed emitter design provide exceptional durability for professional, competition, and outdoor use.
Q: Can the sight be used in varying light conditions?
A: Yes. The optic offers multiple brightness settings and is designed for reliable performance in bright daylight, low light, and night vision-compatible environments.
Maintenance Tips
- Clean the titanium housing and optic window with a microfiber lens cloth to prevent scratches.
- Keep the enclosed emitter window free from dust, mud, and moisture for a clear sight picture.
- Regularly inspect and tighten mounting screws to maintain zero and dependable performance.
- Replace the battery as needed and keep a spare available for extended use.
- Store in a cool, dry location when not in use and use a protective cover during transport.
- Avoid harsh chemicals, solvents, or abrasive cleaners that may damage lens coatings.
- Periodically test the Multi-Reticle System and brightness settings to ensure proper operation.
- Verify zero after heavy recoil, impacts, or long-distance travel.
Damage 
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