Holosun HE503R-GD Gold Dot Sight w/ Rheostat Dial - HE503R-GD

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Holosun HE503R GD Gold Dot Rheostat Dial HE503RGD UPC 605930625394

Product Description

The Holosun HE503R-GD Gold Dot Reflex Sight with Rheostat Control (MPN: HE503R-GD) is an elite micro reflex optic engineered for carbines, shotguns, and modern sporting rifles. Featuring Holosun’s innovative 590nm Gold LED reticle technology, the HE503R-GD projects a highly visible, eye-soothing gold illumination that stands out exceptionally against brightly lit outdoor environments, green foliage, and urban backgrounds while offering superior clarity for shooters with astigmatism or red-green color blindness.

Built into a rugged 6061-T6 aluminum housing, the "R" series design replaces standard push-button controls with an intuitive side-mounted rotary rheostat dial. This rotary switch enables rapid tactile selection across 12 brightness settings (10 daylight and 2 night-vision compatible) and incorporates Holosun’s Multiple Reticle System (MRS), allowing operators to seamlessly toggle between a precision 2 MOA center dot only or a 2 MOA dot with a 65 MOA speed ring.

Powered by a single CR2032 battery housed within the center of the rheostat knob, the HE503R-GD boasts up to 50,000 hours of continuous battery life at mid-settings. Featuring an industry-standard Aimpoint Micro (T1/T2) footprint, the optic comes packaged with both a lower 1/3 co-witness riser mount and a low-profile mount, delivering uncompromising versatility for tactical, hunting, and competition applications.

Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Industry-standard Aimpoint Micro (T1/T2) footprint. Compatible with all standard AR-15 Picatinny top rails using the included lower 1/3 co-witness riser or low mount, as well as aftermarket high-rise optical mounts. (Note: The gold 590nm LED offers exceptional contrast against both green vegetation and desert backdrop terrain while reducing optical bloom for astigmatic eyes).

1. Perform a complete firearm safety check: drop the magazine, lock the action open, and visually/physically inspect the chamber to verify zero live rounds are present.
2. Unscrew the outer battery cap located on the side rotary dial, insert one CR2032 lithium battery with the positive (+) terminal facing outward, and hand-tighten the cap firmly.
3. Attach the chosen mount (lower 1/3 co-witness riser or low profile) to the bottom of the optic housing using the included Torx screws torqued to 12 in-lbs.
4. Place the optic onto your upper receiver’s top Picatinny rail section, ensuring adequate eye relief and receiver clearance.
5. Torque the rail cross-bolt to 30 in-lbs using an inch-pound torque wrench to ensure a rock-solid, zero-holding rail interface.
6. Turn the side rotary rheostat switch clockwise to select your desired brightness level and reticle mode (2 MOA Dot or 2 MOA Dot / 65 MOA Ring) prior to zeroing at the range.

Key Features

• High-Visibility 590nm Gold LED Reticle: Crisp gold illumination reduces optical distortion, mitigates astigmatism bloom, and excels against dark or green backdrops.
• Multiple Reticle System (MRS): Select between a precision 2 MOA center dot or a 65 MOA outer circle with 2 MOA dot for rapid short-range target acquisition.
• Tactile Side Rotary Rheostat Switch: Mechanical rotary dial allows instant, positive brightness selection and reticle toggling even when wearing heavy gloves.
• Up to 50,000 Hours Battery Life: Ultra-efficient LED system runs up to 5 years on a single CR2032 battery at setting 6.
• Rugged 6061-T6 Aluminum Housing: Sealed, nitrogen-purged aircraft aluminum body provides IP67 waterproof and fogproof protection.
• Aimpoint Micro Footprint Interface: Standardized mount pattern includes both lower 1/3 co-witness riser and low-profile Picatinny mounts.

Product Specifications

• Brand: Holosun
• Model/Series: HE503R-GD Gold Dot Micro Reflex Sight
• MPN / SKU: HE503R-GD
• UPC: 605930625394
• Platform Compatibility: Universal Picatinny Rail (Aimpoint Micro Footprint)
• Reticle Color / Type: Gold (590nm) / 2 MOA Dot & 65 MOA Circle
• Brightness Settings: 12 Levels (10 Daylight + 2 Night Vision)
• Magnification / Objective Lens: 1x / 20mm
• Housing Material: 6061-T6 Billet Aluminum
• Finish / Color: Micro Arc Oxidation Black
• Battery Type: One (1) CR2032 Lithium Battery
• Waterproof Rating: IP67 Submersible
• Weight: 3.74 oz (Optic Only)
• Country of Origin: China / USA Operations