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Holosun
Overview
The Holosun HS403R is a compact red dot optic designed for quick target acquisition, featuring a 2 MOA dot size that allows for precise aiming without obscuring the target. It mounts directly to a Picatinny rail, making it compatible with a variety of rifles and setups. This optic is commonly used in builds with a carbine gas system and multi-caliber configurations, providing versatility for shooters looking for efficiency and reliability in their sighting system.
Specifications
Available Merchants(4)
Prices checked
Stock Alert
Build history on GunPartPicker
Builders have been adding the Holosun HS403R 2 MOA Micro Red Dot Optic - HS403R to their builds on GunPartPicker since February 2026. All time, it ranks #263 of the 497 optics builders have added.
It was hard to find in September 2026, in stock on only 1 of the 27 days we checked, and today none of the 4 retailers we track has it in stock right now. It dipped to $132.25 at KY Gun Company for a stretch in September 2026, well under its usual $147.99 to $159.99, so sales do come around. Listed prices start at $138 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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