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  • $269.95

With the new HS403GL, Holosun has updated the design of the successful HS403G. As before, the battery is housed in a low profile compartment. The elevation and windage turrets are now low profile like the other sights in the Holosun line. This provides very little obstruction when aiming, especially with both eyes open. The mount is fully compatible industry standard mounts including aftermarket mounts. 

Features of PARALOW HS403GL Red Dot Sight :

Low profile turrets
Second generation motion sensor
Front Lens is angled to prevent glare
2 MOA dot size
Waterproof rating of IP67
Unlimited field of view
Parallax-free with unlimited eye relief
Unaffected by extreme weather conditions
Durable and reliable construction
Lowest profile emitter on the market
Push button brightness setting
Auto shutoff after 8 hours
Auto awake to medium setting with movement
Includes integrated industry standard low profile and 1/3 co-witness mounts
Weight: 114g (4.0 oz) with the low profile mount and the battery
Working temperature: -10 °C to 50 °C (14 °F to 122 °F)
Storage temperature: -40 °C to 70 °C (-40°F to 158°F)
Objective diameter: 20 mm (glass), 28 mm (ring)
Limited Lifetime Warranty

Parts No. HS403GL UPC 760921087503
Principle Reflex collimator sight - red dot sight
Light source LED (Light Emitting Diode) totally eye-safe wavelength: 650 nm red light
Red Dot Size 2 MOA -- 1 minute of angle = 30mm at 100 meters / 1.04 inch at 100 yards
Parallax Parallax free: No centering required, aim with red dot anywhere inside window.
Eye Relief Unlimited
Night Vision 2 brightness settings for night version. Settings 1, 2 are for night vision. From setting 3 to 12 are day time setting from dim to bright.
Coating Multi-layer coating on all lens.
magnification 1X
Battery CR2032
Battery Life 50,000 hours. Based on setting 6. current is 5μA (micro Ampere). The battery capacity is 250mAHour. 250mAHoursX1000/5μA=50,000 hours
Auto Shutoff 8 Hours. After sight is not used for 8 hours, it will automatically shutoff.
Setting 12 brightness setting include 2 night vision settings. all setting current reading(from 12 to 1) 179μA 36μA 22μA 13.1μA 8.8μA 5.91μA 4.92μA 4.53μA 4.25μA 4.13μA 4.06μA 4.02μA
Housing Material Aluminum 6061-T6
Housing Finish PEO/MAO housing finish: Plasma electrolytic oxidation (PEO), also known as microarc oxidation (MAO), is an electrochemical surface treatment process for generating oxide coatings on metals. It is similar to anodizing, but it employs higher potentials, so that discharges occur and the resulting plasma modifies the structure of the oxide layer. This process can be used to grow thick (tens or hundreds of micrometers), largely crystalline, oxide coatings on metals such as aluminium, magnesium and titanium. Because they can present high hardness and a continuous barrier, these coatings can offer protection against wear, corrosion or heat as well as electrical insulation.
Housing Color Black
Storage Temperature -40°C to 70°C
Working Temperature -30ºC to 60°C
Radioactive None.
Dimension 67 x 38 x 37mm with low mount

Without integrated mount 86g (3.0 oz)

With low profile mount 114g (4.0 oz)