There are quite a few models in the Holosun HS503 series of products - find out how are they different from one another in this video.

Products mentioned: Holosun Micro HS503BU: https://www.optics-trade.eu/en/dot-sights/holosun-micro-hs503bu.html Holosun Paralow HS503C: https://www.optics-trade.eu/en/holosun-paralow-hs503c.html Holosun HS503CU: https://www.optics-trade.eu/en/dot-sights/holosun-hs503cu.html Holosun Paralow HS503FL: https://www.optics-trade.eu/en/holosun-paralow-hs503fl.html Holosun Paralow HS503G: https://www.optics-trade.eu/en/holosun-paralow-hs503g.html Holosun Micro HS503GU: https://www.optics-trade.eu/en/dot-sights/holosun-micro-hs503gu.html

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