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Questions & Answers
I just received it but I can’t find out how to turn it off. The manual doesn’t say anything either. Expert Answer

The OpticsPlanet Exclusive Holosun Paralow Red Dot Sight does not have an off switch. The OpticsPlanet Exclusive Holosun Paralow Red Dot Sight, has up to a 50000 hour battery life. The OpticsPlanet Exclusive Holosun Paralow Red Dot Sight, is always on and ready for use once the battery is installed.

by Hunter, Gear Expert, March 28, 2022
Does this red dot use the same mounting as the aimpoint T1 mounts?? Expert Answer

Yes. The OpticsPlanet Exclusive Holosun Paralow Red Dot Sight utilizes the T1/T2 footprint, so all aftermarket T1 mounts will fit and function with this optic. In the box you will receive a lower 1/3 picatinny mount, and a low picatinny mount.

by Ethan, Gear Expert, March 8, 2022
Customer Reviews
Helpful Positive Review Holosun Paralow red dot sight by Chuck, December 6, 2020
Well worth the money. Easy to mount and was very close to being on zero. Solar power means it is always on and ready to use. like option that when under solar power scope adjust for light conditions I am considering buying another!
4/5 found this helpful
Helpful Positive Review Very satisfied by chacha144, February 15, 2021
All of my Holosun red dots are of excellent quality and are on par with Aimpoint IMO. There's a YouTube video of someone that does a good torture test on a Holosun red dot where he puts it through an array of extreme tests and freezing it in a solid ...
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4/4 found this helpful
Helpful Positive Review Excellent site by Ron, October 31, 2020
This site is easy to set up and use. Solar charging and shake awake technology make this site very user friendly. I have Holosun sites for most of my rifles and carbines and all that are used for self / home defense.
3/3 found this helpful
Helpful Negative Review Died on me from sitting in the safe. by Mark, October 29, 2020
I have one of these solar powered Holosuns and it died on me. Battery replaced twice and nothing. No dot, no reticle the optic just seems to be completely dead. I called up support and got "This voicemail has not been set up yet." Big yikes. If you e...
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15/38 found this helpful
Most Recent Reviews NO OFF BUTTON by JL, Verified Owner, March 1, 2023
This product has one of the dumbest functions out there, you CANNOT turn off your red dot, like at all. It has an auto power off function in bright areas, MEANING that does not power off when in dark storage (like 95% of storage). All that does it ki...
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0/7 found this helpful
Most Recent Reviews Holosun Paralow 2 MOA Dot Red Dot Sigt 1x20 mm by Marty, Verified Owner, May 26, 2025
Solar is a big plus with 5 year battery life. Shake to turn it on is very convenient without the need to turn a knob or press a button. Bulkyness eliminated with small configuration.
Read All 23 Reviews
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14% Off Red Dot Sights

Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code BGDLClick to Copy Coupon Code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers. See promotion details.
Color: Black Reticle: 2 MOA Dot Illumination Color: Red Included Accessories: Standard Condition: New Quantity: 1 Red Dot Sights-Footprint: Not Applicable

Code: 28Y-RD-PVZRD-HS403C

MPN: HS403C

UPC: 760921087374

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BGDL
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List: $235.28Save 32%
$159.99

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Holosun Paralow Red Dot Sight 1x20mm, 2 MOA Dot Reticle, Black, HS403C
Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Anodized, Black, APAR640221M2
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Product Info for Holosun Paralow 2 MOA Dot Red Dot Sight 1x20 mm

The Holosun Paralow HS403C stands out among other Red Dot Sights, boasting a 20mm micro optical sight curated for rifle and carbine applications. It has a 1/3 Co-witness mount that is low profile and and allows for quick release, so you can easily swap your sights when you need to. Plus, the crystal clear magnification allows you to improve your target sight accuracy. Super LED technology allows for better visibility under most lighting conditions with 12 brightness settings and an impressive 50k hours of battery life, ensuring the Holosun Paralow works when you need it most, regardless of the lighting environment. And, with a 2 MOA red dot, you have incredible accuracy at both short- and medium-range.image

WARNING: California`s Proposition 65

Specifications for Holosun Paralow 2 MOA Dot Red Dot Sight 1x20 mm:

Manufacturer: Holosun
Color: Black
Finish: Micro Arc
Fabric/Material: CNC Aluminum
Magnification: 1 x
Objective Lens Diameter: 20 mm
Objective Window Size: 20 mm
Reticle: 2 MOA Dot
Illumination Type: LED
Illumination Color: Red
Brightness Settings: 12
Eye Relief: Unlimited
Adjustment Click Value: 0.5 in at 100 yds
Emitter Type: Enclosed
Lens Material: Glass
Optical Coating: Multi-Layer Reflecting
Battery Type: CR2032
Battery Quantity: 1
Battery Life: Up to 5 years
Operating Temperature: 22 - 140 Fahrenheit
Water Resistance Level: Waterproof
Water Resistant Mark: 1 m
Gun Make: Universal
Gun Model: Universal
Length: 63 mm
Width: 30 mm
Height: 58 mm
Weight: 124 g
Included Accessories: Standard
Condition: New
Package Type: Box
Magnification Type: Fixed
Brightness Index: 2NV / 10DL
Quantity: 1
Tube Diameter: 22 mm
Red Dot Sights-Footprint: Not Applicable
Co-Witness: 1/3 Co-witness
Attachment Type: Quick Detach, Low Profile
Adjustment Range: 0.5 MOA
Housing/Frame Material: 6061-T6 aluminum
W/E Travel at 100 Yds: 50 MOA

Features of Holosun Paralow 2 MOA Dot Red Dot Sight:

  • Up to 50,000 Hours Battery Life (Setting 6);
  • 12 Brightness Setting: 10 DL & 2 NV Compatible;
  • Convenient Tray Battery Compartment;
  • Parallax-free & Unlimited Eye Relief

Package Contents:

  • Holosun Paralow 2 MOA Dot Red Dot Sight
  • Lower 1/3 Co-witness Mount
  • Low Profile Mount
  • T10 L Key
  • Rubber Cover
  • User Manual
  • CR2032 Battery
  • Lens Cloth

Holosun Paralow 2 MOA Dot Red Dot Sight 1x20 mm Orderable Models

List of Orderable Models

Holosun Paralow Red Dot Sight 1x20mm, 2 MOA Dot Reticle, Black, HS403C , MPN: HS403C , UPC: 760921087374 , Code: 28Y-RD-PVZRD-HS403C

Proposition 65 Warning for California Consumers

For more information go to www.p65warnings.ca.gov

Notification

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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