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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

Holosun 403C

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Holosun 403C Details

About the Holosun 403C sight

HOlosun 403C is a red dot sight of the Paralow series.

The letter 'C' means that the sight features a solar panel on top – the red dot sight can work without the battery inserted when there is sufficient lighting.

Does Holosun 403C have Shake Awake?

Holosun 403C features the ShakeAwake function. When left powered on, the 403C will go from 'active mode' to 'sleep mode' after a while to prevent unnecessary battery drain. Once moved, it will power back on immediately.

Main features of 403C red dot

  • 2 MOA dot

  • red and green illumination on 403C MOA red dot
  • comes with a low mount and a high mount for lower third co-witness on standard AR platforms

  • ShakeAwake

  • same mounting platform as Aimpoint Micro devices

  • 12 illumination intensity levels, 2 of them are NVD compatible

  • features a solar panel on top

  • Parallax free

  • 50.000 hours of battery life

  • the battery compartment on the right side of the sight in the form of a battery tray

About the Paralow series

Paralow is one of the red dot sight series made by Holosun. On the outside, these small tube sights are very familiar to the Micro red dot sights made by the famous Swedish red dot sight manufacturing company. The illumination is powered by a CR2032 battery. The click value for the elevation and windage adjustments is 0.5 MOA. These durable red dot sights feature a single-piece housing made out of aluminum. Altogether, there are 12 illumination intensity levels to choose from, 2 of which are NVD compatible. The battery life is 50.000 hours.

About the 403C model family

The 403C is one of the model families in the Holosun Paralow series. The first number '4' in its name suggests that it features a 2 MOA dot. The second number '0' implies that the product comes with standard accessories (without honeycomb filter, quick-release mount and flip-up lens covers).

Mounting details of 403C dot sight

These small tube sights come with a high mount for an AR platform (lower 1/3 co-witness) and a low mount for other mounting purposes (such as mounting on a rifle). All models in the Holosun Paralow series except the ones with the letter 'A' in their name have the same mounting platform as the Aimpoint Micro devices.

For more information about Aimpoint Micro standard read our article Footprints/Mounting Standards on Red Dot Sights or read Holosun 403C Footprint blog post. 

Warranty on Holosun 403C sight

The warranty on 403C is 3 years on the material and 3 years on the electronics.

For more information regarding the Holosun symbols, check our blog post.

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Holosun 403C Specifications

Dot sight seriesHolosun Paralow
Made inChina
In production since2014
Warranty3 years
Click Value 14mm/100m - 1/2MOA
Windage - mrad. 14.53mrad
Windage - MOA.50MOA
Reticle position No
Reticle illumination Yes
Usable at daytime Yes
Automatic Turn Off Yes
Size of Dot.2MOA
Adju. intensityYes
Intensity controlYes
Parallax setting Parallax-free
Length.62 mm
Width.36 mm
Height.41 mm
Working temperature range-30℃~60℃
Power Supply UnitCR2032
Battery lifespan.50000h
Filled with No
Lens coatings Fully Multicoated
Tube size/diameter 20 mm
Mounting StandardAimpoint Micro
Mount type - IntegratedPicatinny
Mount length.0mm
Size of windowNo
Dot Sight TypeSmall tube sight
Water proof Yes
Fogproof Yes
Shock proofYes
Type of mount rail Picatinny Mount


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Reviews & Testimonials

Reviews for Holosun 403C

1 reviews
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Small and great By
This small red dot surprised me completely, since I did not expect such a high level of quality in a product of this price range. It is build solid and the finish is very nice. It has not parallax error that I could notice and the dot is bright enough even for day time use at the brightest sun light.

I will put these dots on all my rifles. Optics Trade service and communication was also splendid.

(Posted on 03/06/2016)

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