---
product_id: 177475890
title: "510C & HM3X Combo RED/Green Multi-Reticle Circle Dot Open Reflex Sight w/3x Flip-to-Side Magnifier 510C-HM3X"
brand: "holosun"
price: "264.62 OMR"
currency: OMR
in_stock: true
reviews_count: 8
category: "Holosun"
url: https://www.desertcart.com.om/products/177475890-510c-and-hm3x-combo-red-green-multi-reticle-circle-dot
store_origin: OM
region: Oman
---

# 50,000 hrs battery life 3X flip-to-side magnifier Titanium alloy hood durability 510C & HM3X Combo RED/Green Multi-Reticle Circle Dot Open Reflex Sight w/3x Flip-to-Side Magnifier 510C-HM3X

**Brand:** holosun
**Price:** 264.62 OMR
**Availability:** ✅ In Stock

## Summary

> 🎯 Elevate your aim, dominate every shot.

## Quick Answers

- **What is this?** 510C & HM3X Combo RED/Green Multi-Reticle Circle Dot Open Reflex Sight w/3x Flip-to-Side Magnifier 510C-HM3X by holosun
- **How much does it cost?** 264.62 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/177475890-510c-and-hm3x-combo-red-green-multi-reticle-circle-dot)

## Best For

- holosun enthusiasts

## Why This Product

- Trusted holosun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-Reticle Mastery:** Seamlessly switch between 65 MOA circle, 2 MOA dot, or combined reticles with zero re-zeroing needed—precision tailored to your style.
- • **Flip-to-Side 3X Magnifier:** Quickly toggle between close-quarters and mid-range engagements with the easy-to-use magnifier that mounts and dismounts in seconds.
- • **Titanium-Tough Protection:** Rugged titanium alloy hood and waterproof design ensure your optic withstands the harshest environments and calibers.
- • **Unmatched Battery Longevity:** Up to 50,000 hours on a single CR2032 battery keeps you mission-ready without the hassle of frequent changes.
- • **Versatile & Ready for Action:** QD mount, IP67 waterproof rating, and compatibility with multiple co-witness setups make this combo the ultimate tactical upgrade.

## Overview

The HOLOSUN 510C & HM3X Combo is a professional-grade reflex sight paired with a 3X flip-to-side magnifier, featuring a titanium alloy hood, multi-reticle system, and up to 50,000 hours of battery life. Designed for tactical precision and rugged durability, it offers versatile reticle options, quick magnifier deployment, and waterproof shock resistance—perfect for competitive shooters and outdoor pros seeking unmatched flexibility and reliability.

## Description

The Holosun 510C & HM3X Combo provides a versatile and rugged sighting system designed for optimal performance in long gun applications. The 510C, a high-quality open reflex sight, pairs perfectly with the HM3X, a 3X magnifier, delivering unmatched flexibility and precision for tactical professionals, competitive shooters, and outdoor enthusiasts alike. This combo offers a seamless solution for close-range and mid-range engagements. The 510C features an aluminum housing with a titanium hood, ensuring durability and shock resilience in demanding environments. It includes advanced features like Solar Failsafe, Shake Awake Technology, and a Multi-Reticle System (MRS), allowing users to choose between a 2 MOA dot, 65 MOA circle, or a circle-dot combination for precise targeting. With a SuPer LED, the HS510C provides up to 50,000 hours of battery life on a single CR2032 battery, and 10 daylight and 2 NV compatible brightness settings for all lighting conditions. Paired with the HM3X, this combo extends your range with 3X magnification and a flip-to-the-side design for quick adjustments between close and medium-range targets. The HM3X features a QD mount, compatibility with both absolute and lower 1/3 co-witness optics, and provides 2.75” eye relief for comfortable viewing. It is also IP67 waterproof and shockproof, making it reliable in harsh conditions. Together, the 510C & HM3X Combo is an ideal solution for those seeking a rugged, flexible, and high-performance optic system for a variety of shooting scenarios.

Review: A game-changer for anyone in need of a versatile and highly effective optical solution - The HOLOSUN HS510C & 3X Magnifier Combo, featuring the HS510C red dot sight and the HM3X magnifier, is a game-changer for anyone in need of a versatile and highly effective optical solution. Here's why it unquestionably earns a perfect 5-star rating: Crystal-Clear Optics: The HS510C red dot sight provides a clear and crisp view, with a wide field of vision. The optical quality is outstanding, ensuring you can acquire targets quickly and accurately. Reticle Options: The sight offers various reticle options, allowing you to choose the one that suits your shooting style and preferences, whether it's a dot, circle, or both. The multiple brightness settings make it usable in various lighting conditions. 3X Magnifier: The included HM3X magnifier is a fantastic addition. It allows you to zoom in on your target for greater accuracy, making it an excellent choice for both short-range and long-range shooting. Flip-to-Side Design: The magnifier features a flip-to-side design, which means you can quickly move it out of the way when you don't need the extra magnification, and flip it into place when you do. Durable Construction: Both the red dot sight and the magnifier are built to withstand the rigors of shooting and outdoor use. They're robust and durable, designed for heavy-duty performance. Versatile Use: Whether you're into competitive shooting, tactical applications, or simply want to enhance your target acquisition, this combo is versatile and suitable for various scenarios. Quick and Easy Installation: The combo is straightforward to install and set up on your firearm, allowing you to start using it with minimal hassle. Value for Money: Considering the quality of the optics, the magnification options, and the versatility this combo provides, it offers excellent value for the price. In summary, the HOLOSUN HS510C & 3X Magnifier Combo is a 5-star optical marvel that excels in providing clear, versatile, and highly effective optics for your shooting needs. Whether you're a professional shooter, competitive sportsman, or someone who enjoys the precision of target practice, this combo is a reliable and valuable addition to your firearms setup.
Review: Great optic combo, highly recommend - I may be biased in that I already have several Holosun optics and wanted this for a rifle since I am familiar with them already. This is a great optic, with quick connect/disconnect (just flip a lever that is adjustable for tension and it comes off), both for the optic and for the magnifier. That was important since I do a lot of close shooting (less than 25 yards), so I wanted to be able to take the magnifier off and put it on easily. Also, I have a low mount picatinny rail that they are mounted on so I can’t co-witness with the iron sights with the optic on, but if it ever fails it is so easily removed that it’s not really an issue. Easy to mount, easy to zero and easy to use. I like having the option of either dot with circle (close) or just dot (farther away or for better accuracy) as well as adjustable brightness. The only negative is that the buttons on the side to adjust brightness and circle/dot are not that easy to feel in order to use when trying to look through the optic.

## Features

- ADVANCED TECHNOLOGY: The Holosun HS510C New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery.
- PROTECTIVE TITANIUM ALLOY HOOD: The Holosun HS510C Circle Dot Scope with 3 Reticle Options is waterproof down to 1m and durable enough for even the heaviest calibers.
- EASY USE: The reticle can be switched between a 65 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 65 MOA ring only at the push of a button. Better yet, the same LED projects both reticles, so no re-zeroing is necessary.
- COMBO SET: Includes Holosun HS510c Reflex Sight, Holosun HM3X 3X Magnifier and a protective storage case.
- PROTECTIVE STORAGE CASE: Includes protective storage case so you can keep your Holosun items safe at all times.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081DCD2K7 |
| Aiming Scope Sight Pin Size | 1 Millimeters |
| Best Sellers Rank | #9,475 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #26 in Gun Sights |
| Brand | HOLOSUN |
| Brand Name | HOLOSUN |
| Color | BLACK |
| Compatible Devices | Rifle |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,028) |
| Date First Available | November 12, 2019 |
| Included Components | Lens Cloth, Riser, Tool |
| Item Package Dimensions L x W x H | 8.15 x 6.26 x 3.62 inches |
| Item Weight | 0.31 Pounds |
| Magnification Maximum | 3 x |
| Magnification Minimum | 3 x |
| Manufacturer | Holosun |
| Material | Aluminum, Titanium Hood |
| Model Name | 510C / HM3X COMBO |
| Mounting Type | QD mount |
| Night vision | No |
| Number of Items | 1 |
| Objective Lens Diameter | 32 Millimeters |
| Package Weight | 1.18 Kilograms |
| Part Number | 510C-HM3X |
| Product Dimensions | 3.3"L x 1.8"W x 2.31"H |
| Reticle Type | Circle Dot |
| Sport | Hunting |
| Style | RED RETICLE |
| Suggested Users | unisex-adult |
| UPC | 605930625714 |
| Warranty Description | Limited Lifetime Manufacturer Defective Warranty |

## Product Details

- **Brand:** HOLOSUN
- **Color:** BLACK
- **Item Weight:** 0.31 Pounds
- **Magnification Maximum:** 3 x
- **Magnification Minimum:** 3 x
- **Material:** Aluminum, Titanium Hood
- **Objective Lens Diameter:** 32 Millimeters
- **Product Dimensions:** 3.3"L x 1.8"W x 2.31"H
- **Sport:** Hunting
- **Style:** RED RETICLE

## Images

![510C & HM3X Combo RED/Green Multi-Reticle Circle Dot Open Reflex Sight w/3x Flip-to-Side Magnifier 510C-HM3X - Image 1](https://m.media-amazon.com/images/I/61-akSNwl5L.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Questions & Answers

**Q: Does the magnifier enlarge the red dot's MOA or does it stay the same like a holograph?**
A: Magnifiers always enlarge the reticle. With holographic technology like in EOTech, the central dot can be made small enough (~0.3 MOA) that it remains smaller than human eye resolution even after it's enlarged 3x.

This, however, is not a holographic sight but a red dot. The central aiming dot here is 2 MOA large *before* magnification, so it does get proportionally larger with a magnifier. The flip side is that the reticle is crisp, and battery life is measured in tens of thousands of hours, not in hundreds.

**Q: Is this a knockoff?**
A: No this is a factory original product.

**Q: Does it flip over to the left or to the right? It looks left, which would put it in front of your left eye when shooting eith both eyes open.**
A: I’m fairly certain that it can be switched based on your preference, mine flips to the right. It can also be setup to flip 90* or 135*.

**Q: Did the riser come with longer screws?  I have longer screws for my magnifer and it mounts fine but the optic came with the same length screws.**
A: Mine came with both long and short screws

## Customer Reviews

### ⭐⭐⭐⭐⭐ A game-changer for anyone in need of a versatile and highly effective optical solution
*by A***M on October 19, 2023*

The HOLOSUN HS510C & 3X Magnifier Combo, featuring the HS510C red dot sight and the HM3X magnifier, is a game-changer for anyone in need of a versatile and highly effective optical solution. Here's why it unquestionably earns a perfect 5-star rating: Crystal-Clear Optics: The HS510C red dot sight provides a clear and crisp view, with a wide field of vision. The optical quality is outstanding, ensuring you can acquire targets quickly and accurately. Reticle Options: The sight offers various reticle options, allowing you to choose the one that suits your shooting style and preferences, whether it's a dot, circle, or both. The multiple brightness settings make it usable in various lighting conditions. 3X Magnifier: The included HM3X magnifier is a fantastic addition. It allows you to zoom in on your target for greater accuracy, making it an excellent choice for both short-range and long-range shooting. Flip-to-Side Design: The magnifier features a flip-to-side design, which means you can quickly move it out of the way when you don't need the extra magnification, and flip it into place when you do. Durable Construction: Both the red dot sight and the magnifier are built to withstand the rigors of shooting and outdoor use. They're robust and durable, designed for heavy-duty performance. Versatile Use: Whether you're into competitive shooting, tactical applications, or simply want to enhance your target acquisition, this combo is versatile and suitable for various scenarios. Quick and Easy Installation: The combo is straightforward to install and set up on your firearm, allowing you to start using it with minimal hassle. Value for Money: Considering the quality of the optics, the magnification options, and the versatility this combo provides, it offers excellent value for the price. In summary, the HOLOSUN HS510C & 3X Magnifier Combo is a 5-star optical marvel that excels in providing clear, versatile, and highly effective optics for your shooting needs. Whether you're a professional shooter, competitive sportsman, or someone who enjoys the precision of target practice, this combo is a reliable and valuable addition to your firearms setup.

### ⭐⭐⭐⭐⭐ Great optic combo, highly recommend
*by A***R on February 25, 2026*

I may be biased in that I already have several Holosun optics and wanted this for a rifle since I am familiar with them already. This is a great optic, with quick connect/disconnect (just flip a lever that is adjustable for tension and it comes off), both for the optic and for the magnifier. That was important since I do a lot of close shooting (less than 25 yards), so I wanted to be able to take the magnifier off and put it on easily. Also, I have a low mount picatinny rail that they are mounted on so I can’t co-witness with the iron sights with the optic on, but if it ever fails it is so easily removed that it’s not really an issue. Easy to mount, easy to zero and easy to use. I like having the option of either dot with circle (close) or just dot (farther away or for better accuracy) as well as adjustable brightness. The only negative is that the buttons on the side to adjust brightness and circle/dot are not that easy to feel in order to use when trying to look through the optic.

### ⭐⭐⭐⭐⭐ Worthy optic system
*by R***. on December 12, 2025*

I love this setup. Easy to install and use. Eye relief is nice along with the field of view. Definitely worth the money.

## Frequently Bought Together

- HOLOSUN HS510C & HM3X Combo Multi-Reticle Circle Dot Open Reflex Sight w/3x Flip-to-Side Magnifier 510C-HM3X
- Magpul Rifle Bipod Gun Rest for Hunting and Shooting
- Magpul QD Sling Swivel

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-11*