--- title: "Holosun HE510C-GR & HM3X Combo Kit" description: "Green-reticle reflex sight and flip-to-side 3x magnifier with Solar Failsafe, Shake Awake, adjustable diopter, quick-detach mount, and hard case." canonical_url: "https://www.kygunco.com/product/holosun-he510c-gr-hm3x-combo-kit-with-hard-case" meta: author: KYGUNCO "og:description": "Green-reticle reflex sight and flip-to-side 3x magnifier with Solar Failsafe, Shake Awake, adjustable diopter, quick-detach mount, and hard case." "og:image": "https://cdn.kygunco.com/assets/products/305812/thumbnail.jpg?v=1771510926" "og:image:height": "500" "og:image:width": "500" "og:title": "Holosun HE510C-GR & HM3X Combo Kit" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Brands](https://www.kygunco.com/brands) / [Holosun](https://www.kygunco.com/brand/holosun) / HLS-HE510C-GR+HM3X ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/305812/main.jpg?v=1771510926) For illustration purposes only, this image may not be an exact representation of the product. # HOLOSUN HE510C-GR & HM3X Combo Kit with Hard Case The HOLOSUN HE510C-GR and HM3X combo combines a green-reticle open reflex sight with a flip-to-side 3x magnifier. The sight offers Solar Failsafe, Shake Awake activation, selectable reticle options, and absolute or lower 1/3 co-witness mounting with the included spacer. The HM3X adds an adjustable diopter, multi-coated optics, and quick-detach mounting, with a protective hard case included. $514.99 ** 5 interest-free payments of **$103** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) Pay over time with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Almost gone. Order now before it sells out. Item # 305812 Style HLS-HE510C-GR+HM3X UPC 810047073536 Condition New Manufacturer [Holosun](https://www.kygunco.com/brand/holosun) Weight 1 lb The Holosun HS510C-GR and HM3X Magnifier Combo pairs advanced red dot technology with versatile magnification in a streamlined package. The HS510C-GR open reflex sight features a wide viewing window, Solar Failsafe™ power with backup battery, Shake Awake™ activation, and Holosun’s Multiple Reticle System, allowing quick selection between a 65 MOA ring with 2 MOA dot, ring only, or dot only—without re-zeroing. A bonus spacer allows mounting at absolute or lower 1/3 co-witness. The included HM3X flip-to-side magnifier delivers clear 3x magnification with generous eye relief, an adjustable diopter, and a quick-detach mount for rapid transitions between magnified and unmagnified viewing. Durable finishes and intuitive operation make this combo a reliable solution for tactical and duty use. FEATURES - Dual-mode operation with 1x red dot and flip-to-side 3x magnification - Green Multiple Reticle System: 2 MOA dot, 65 MOA circle, or combined - Shake Awake activation for instant readiness - Solar and battery power system for extended reliability - Parallax-free design for fast target acquisition - Unlimited eye relief for flexible shooting positions - Adjustable diopter (-3 to +3) for user-specific focus - Multi-coated optics for enhanced clarity - Waterproof construction - Includes protective case SPECIFICATIONS - Brightness Settings: 10 Day / 2 Night - Adjustment Range: 50 MOA windage / elevation - Objective Size: 0.91" × 1.26" - Exit Pupil Diameter: 7.60 mm - Length: 1.60 inches - Height: 1.78 inches - Weight: 4.94 oz - Power Source: Solar / CR2032 battery - Battery Life: Up to 50,000 hours ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Holosun ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/holosun-he510c-gr-hm3x-combo-kit-with-hard-case#webpage","@type":"WebPage","description":"Green-reticle reflex sight and flip-to-side 3x magnifier with Solar Failsafe, Shake Awake, adjustable diopter, quick-detach mount, and hard case.","name":"Holosun HE510C-GR & HM3X Combo 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