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The HS510C is Holosun's flagship 1x open reflex red dot — 65 MOA circle + 2 MOA dot, solar backup, 50,000-hour battery. The HM3X is a 3X flip-to-side magnifier that mounts behind the optic, giving you instant 3X magnification when you need it and stays out of the way when you don't.
Together they form an AR-15 setup that handles close-quarters (1x) and 100-200 yard targets (3x) without swapping optics. Used by 3-gun competitors, home defense rifle owners, and tactical instructors.
You save around $50 (combo $485 vs ~$570 separate). The magnifier is optimized for the HS510C reticle — no parallax issues that can happen mixing brands.
The HM3X mounts on a swing-arm. Push the lever and the magnifier swings 90° to the side, leaving you with clean 1x sight picture. Flip back behind for instant 3x. Returns to the same alignment — no re-zeroing.
LPVO = single optic, variable mag, usually heavier and 3x your price. This combo = lighter, ~half the cost, similar tactical versatility.
Yes — the QD flip mount returns to position with high repeatability. Zero is on the HS510C; the magnifier just enlarges the view.
Yes — Holosun lifetime warranty on electronics for both pieces, 10 years on housing.
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Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box.
