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Holosun HS403R 2MOA Dot 20mm Micro Reflex Sight w/Rotary Switch HS403R

SKU HS403R-Holosun

List Price $179.99
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This item may be regulated for export by the U.S. Department of State or the US Department of Commerce. Please see our Export Policy.


The HS403R is a 20mm micro optical sight designed for rifle and carbine applications. Features include our new Rotary Switch, 12 brightness settings, Holosun’s Super LED with up to 50k hours battery life, and a 2 MOA Dot.

In the Box:

  • Lower 1/3 Cowitness Mount
  • Rubber Cover
  • Low Profile Mount
  • T10 L Key
  • CR2032 Battery
  • Lens Cloth
  • User Manual

Features of the Holosun HS403R

  • 2 MOA Dot Reticle
  • Up to 50,000 Hours Battery Life (Setting 6)
  • 12 Brightness Setting: 10 DL & 2 NV Compatible
  • Rotary Battery Compartment
  • Parallax-free & Unlimited Eye Relief
  • Multilayer Reflective Glass


  • Magnification Range:1x
  • Reticle Details2 MOA Dot Reticle
  • Objective Lens Diameter:20 mm
  • Dimensions:2.57" L x 2.70" T x 1.59" W
  • Weight:3.53 oz
  • BatteryCR2032
  • Battery TypeCR2032
  • Night Vision CompatibleYes
  • Brightness Settings2 NVD 10 Regular
  • Product TypeReflex Sight/Red Dot
  • Item ConditionNew
  • UPC605930625295
  • MPNHS403R

Customer Reviews

Average Rating
November 18, 2023

Put the HS403R on my Ruger Mark iv pistol. What a change it has made in my accuracy. Groups have tightened up and the easy of use is amazing. Plus the price was great. I love doing business with EuroOptics. Fast delivery, wonderful price and a fantastic product.

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