The Holosun HE403B-GR Elite, Green Dot, 2 MOA, Black (SKU: HE403B-GR / 17619) is a compact and reliable red dot sight with a 2 MOA green dot aiming point. It features a long battery life (up to 50,000 hours) on a single CR2032 battery, a Shake Awake power-saving system, and a waterproof, durable CNC-machined T6061-T6 aluminum housing. Two mounts are included: low-profile and 1/3 Co-Witness.

Key features:

• parallax-free optical system with unlimited distance from the eye
• design that minimizes field of view restrictions
• low power consumption LED, operating time up to 50,000 hours
• 2 MOA green dot with brightness adjustment (10 levels + 2 for night vision)
• Shake Awake motion sensor – automatic wake-up after sleep
• remembering the last used brightness level
• durable lenses with multi-layer coatings
• 1/2 MOA adjustment per click, 50 MOA range
• IP67 waterproof
• T6061-T6 aluminum housing, MAO finish
• battery mounted in a removable, pull-out tray
• two mounts included: low and 1/3 Co-Witness

Technical parameters:

• lens diameter: 20 mm
• aiming point: 2 MOA dot
• Backlight source: LED
• magnification: 1x
• eye distance: unlimited
• adjustment: 1/2 MOA per click, range 50 MOA
• parallax: ≤±1 MOA
• coatings: multi-layer
• brightness adjustment: 10 levels + 2 for night vision
• automatic shutdown: after 8 hours of inactivity
• power supply: CR2032 battery
• operating time: up to 50,000 h
• housing: T6061-T6 aluminum
• finish: micro-arc oxidation MAO
• color: black
• vibration resistance: up to 1000 G
• waterproof: IP67
• operating temperature range: -10°C to 50°C
• storage temperature range: -40°C to 70°C
• dimensions: 62 × 36 × 69 mm (with high mounting)
• weight: 133 g (with high mount)

Set components:

• Holosun HE403B-GR Elite collimator with 1/3 Co-Witness mount
• low installation
• CR2032 battery
• rubber lens covers
• spare battery tray (with screws)
• setting key
• 2 × Torx keys
• microfiber cloth