Holosun HS403B Red Dot Sight - 2 MOA

Manufactured by Holosun
Manufactured by Holosun
5 Reviews

In Stock

Standard orders will ship out 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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The Holosun HS403B Red Dot Sight 2 MOA employs LED technology. Holosun’s “Shake-Awake” sight powers up with vibration and the user can customize the shut off time.  
The optic features a 50,000-hour run time using a single CR2032 battery. Compatible with standard mounts, this red dot can be mounted on various weapons platforms such as shotguns, pistols, air rifles, and crossbows. Holosun’s HS403B Red Dot Sight has 12 different brightness settings, and the sight works with night vision devices. 

  • Parallax free
  • Unlimited eye relief
  • Push button controls
  • Streamlined housing design
  • Shake-Awake auto on/auto off
  • Low mount and 1/3 co-witness mount included
  • 1913 Picatinny and Weaver rail compatible
  • 6061-T6 aluminum
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Battery Life50000 Hours
Battery TypeCR2032 3V Lithium Coin
Brightness12 Settings
Click Value1/2 MOA
FinishPlasma Electrolytic Oxidation
MaterialAluminum - 6061-T6
Night Vision CompatibleNight Vision Compatible
Reticle2 MOA Dot
Reticle ColorRed
Warrantylimited lifetime
Weight2.8 Oz.

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

5 reviews

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Great company

by -

Red dot was lost in shipping or was taken by a porch pirate but primary arms replaced it and sent me a new one free! Will definitely buy from here again. Have not used the red dot yet so my 5 stars are just for the company

Great red dot

by -

Can not beat the value in a Holosun red dot. Have a few of these on my rifles and rifle caliber pistols. This is a great value in a basic red dot.

Durability tested


Bought this red dot specifically to get banged up at the tactical games. It went through the ringer and came out fine, can't beat the price for the quality and reliability.

Love it

by -

Worth the price- 5 star

I have a few and keep buying them

by -

This is my go to red dot optic… I have this optic on all my home defense rifles… easy.. light weight.. and the shake awake with 50,000 hours of battery life ensures it’s always ready.