Holosun HE503RGD 1x 20mm 2 MOA/65 MOA

Holosun HE503R-GD (HE503RGD 503) red dot sight is a 1x, 20mm micro optic designed for rifle and carbine applications. It provides a multi-reticle aiming option with a 2 MOA gold dot and a 65 MOA circle to assist with rapid target placement and close-to-medium range use.

The HE503R-GD solves the need for a compact, durable reflex sight with selectable reticle intensity and long LED life. It is intended for rifle and carbine platforms where a low-profile, fast-acquisition optic is required. The sight’s low mount and 1/3 co-witness mount options accommodate varying receiver and sight heights for common modern rifle setups.

• Multi-Reticle System (MRS): 2 MOA gold dot plus 65 MOA circle for versatile aiming options
• Magnification: 1x with a 20 mm objective/tube diameter for unlimited eye relief
• LED & battery: Gold Super LED with approximately 50,000 hour battery life; uses a CR2032 cell
• Reticle intensity: Rotary switch with 10 daylight and 2 night-vision-compatible intensity settings
• Mounting options: Includes lower 1/3 co-witness mount (1.63) and a low mount (0.75) for low-comb height rifle applications
• Construction: 6061 aluminum housing with black anodized finish and rubber lens covers
• Additional features: Shake Awake technology and an integrated battery compartment in the rotary switch
• Adjustments: Windage and elevation adjustable with 0.50 MOA per click
• Dimensions & weight: Length 2.57″ and weight 3.53 oz
• Optical: Multi-coated lenses and waterproof proofing

Specifications & Construction
Housing: 6061 aluminum with black anodized finish. Length: 2.57″. Weight: 3.53 oz. Tube/Objective: 20 mm. Magnification: 1x. Reticle: 2 MOA gold dot with 65 MOA circle. Adjustment increment: 0.50 MOA. Power: CR2032 battery (battery compartment integrated into the rotary switch). Optics: multi-coated lenses. Environmental: waterproof.

Compatibility & Intended Use
The HE503R-GD is designed for rifle and carbine applications and includes mounts for both 1/3 co-witness and low-comb height configurations. It is appropriate as a primary red dot or as a fast-acquisition optic on patrol, range, or general carbine setups, and can be paired with backup sights where a low-profile reflex is desired.