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Finding the right optic for your Glock 43x can feel like searching for a needle in a haystack. It’s a fantastic pistol for concealed carry, but its compact size demands a specific type of optic—something that doesn’t add unnecessary bulk while still improving accuracy and target acquisition. Many shooters struggle to find that perfect balance, ending up with sights that are either too large, too dim, or just plain unreliable. I’ve spent quite a bit of time experimenting with different optics on my own 43x, and I’m here to share what I’ve learned. In this article, I’ll break down some top contenders, offering insights to help you make the best choice for your needs.
Product Overview / Quick Summary
- Holosun HS507K X2: Compact, durable, with multiple reticle options. Ideal for concealed carry.
- Trijicon RMRcc: Rugged construction, clear glass, and a proven track record. A premium option for reliability.
- Shield Sights RMS2: Extremely low profile and lightweight. Perfect for minimizing bulk on your 43x.
- Sig Sauer RomeoZero: Lightweight, budget-friendly, and easy to install. Good for beginners or casual shooters.
- Swampfox Sentinel: Feature-rich with shake-awake technology and a clear view. Great value for the price.
Top 5 Best Optic For Glock 43x Reviews
1. Holosun HS507K X2
The Holosun HS507K X2 is a popular choice for the Glock 43x, and for good reason. It’s a compact, durable optic with multiple reticle options, including a 2 MOA dot, a 32 MOA circle, and a combined circle-dot. This versatility makes it suitable for a variety of shooting scenarios.
Pros:
- ✅ Multiple reticle options (2 MOA dot, 32 MOA circle, circle-dot)
- ✅ Shake Awake technology
- ✅ Durable aluminum housing
Cons:
- ❌ Battery life isn’t the best compared to some competitors
- ❌ Buttons can be a bit small for some users
- ❌ Some may find the reticle too busy
Verdict: The HS507K X2 is a solid all-around optic for the Glock 43x, especially if you value reticle versatility and durability. It’s a good choice for concealed carry and general use.
2. Trijicon RMRcc
The Trijicon RMRcc is the compact version of the legendary RMR. It’s known for its rugged construction and crystal-clear glass. If you want a premium optic that can withstand serious abuse, the RMRcc is a top contender.
Pros:
- ✅ Extremely durable and reliable
- ✅ Clear and crisp glass
- ✅ Trusted brand with a proven track record
Cons:
- ❌ Higher price point compared to other options
- ❌ Battery changes require removing the optic
- ❌ Some may prefer a larger window
Verdict: The Trijicon RMRcc is a premium optic that’s built to last. It’s an excellent choice if you prioritize durability and reliability above all else, and don’t mind paying a bit extra.
3. Shield Sights RMS2
The Shield Sights RMS2 is designed for those who want the lowest possible profile on their Glock 43x. It’s incredibly lightweight and sits very close to the slide, making it ideal for concealed carry.
Pros:
- ✅ Extremely low profile and lightweight
- ✅ Clear glass
- ✅ Auto-brightness adjustment works well
Cons:
- ❌ Battery life can be shorter than other optics
- ❌ No manual brightness adjustment
- ❌ Not as durable as some other options
Verdict: The Shield Sights RMS2 is perfect if you want to minimize bulk on your Glock 43x. It’s a great choice for concealed carry, but may not be the best option for harsh environments or heavy use.
4. Sig Sauer RomeoZero
The Sig Sauer RomeoZero is a budget-friendly option that’s surprisingly capable. It’s lightweight, easy to install, and offers a clear view. It’s a good starting point for those new to red dot sights on pistols.
Pros:
- ✅ Affordable price point
- ✅ Lightweight
- ✅ Easy to install
Cons:
- ❌ Durability is a concern for heavy use
- ❌ Polymer housing
- ❌ Battery life is not as long as some competitors
Verdict: The Sig Sauer RomeoZero is a decent budget option for casual shooters or those who are new to red dot sights. However, if you plan on using your Glock 43x in demanding situations, you might want to consider a more durable optic.
5. Swampfox Sentinel
The Swampfox Sentinel packs a lot of features into a compact package. It has shake-awake technology, a clear view, and is offered at a competitive price point. It’s a great value for the money.
Pros:
- ✅ Shake Awake technology
- ✅ Clear glass
- ✅ Good value for the price
Cons:
- ❌ Some users have reported issues with auto-brightness
- ❌ Not as well-known of a brand as Trijicon or Holosun
- ❌ Battery changes require optic removal
Verdict: The Swampfox Sentinel is a solid option for those looking for a feature-rich optic at a reasonable price. It offers a good balance of performance and value, making it a great choice for everyday carry and recreational shooting.
Buying Guide
Choosing the right optic for your Glock 43x involves considering several factors. Here’s what you should keep in mind:
- Size and Weight: The Glock 43x is a compact pistol, so you’ll want an optic that doesn’t add too much bulk. Look for optics specifically designed for subcompact pistols.
- Durability: Consider how you’ll be using your pistol. If you plan on carrying it every day or using it in demanding environments, you’ll want an optic with a rugged housing and reliable performance.
- Reticle: Red dot sights typically come with either a dot or a circle-dot reticle. Consider what works best for your eyes and shooting style. Some optics offer multiple reticle options.
- Battery Life: Battery life can vary significantly between different optics. If you don’t want to worry about constantly changing batteries, look for an optic with long battery life and features like shake-awake technology.
- Brightness Adjustment: Consider whether you prefer manual or automatic brightness adjustment. Automatic brightness adjustment can be convenient, but manual adjustment gives you more control in different lighting conditions.
- Mounting: Ensure the optic you choose is compatible with the Glock 43x’s mounting system. Some optics may require an adapter plate.
- Budget: Optic prices can range from affordable to premium. Set a budget and stick to it, but remember that you often get what you pay for in terms of durability and performance.
FAQs
Q: Do I need to have my Glock 43x milled to install an optic?
A: Yes, the Glock 43x doesn’t come with a factory-milled slide for optics. You’ll need to have it milled by a gunsmith or purchase an aftermarket slide that’s already milled.
Q: What is “shake awake” technology?
A: Shake awake technology automatically turns the optic on when it senses movement and turns it off after a period of inactivity, helping to conserve battery life.
Q: What size dot should I choose?
A: The ideal dot size depends on your personal preference and shooting style. A smaller dot (e.g., 3 MOA) is more precise for longer-range shots, while a larger dot (e.g., 6 MOA) is easier to acquire quickly at close range.
Q: Can I co-witness iron sights with a red dot on my Glock 43x?
A: Yes, you can co-witness iron sights with a red dot, but you’ll need to use taller “suppressor height” sights. This allows you to use the iron sights as a backup if the red dot fails.
Q: How often should I change the battery in my red dot sight?
A: Battery life varies depending on the optic and usage. Some optics can last for several years on a single battery, while others may need to be changed every few months. Always follow the manufacturer’s recommendations.
Conclusion
Choosing the best optic for your Glock 43x is a personal decision that depends on your individual needs and preferences. Consider how you’ll be using your pistol, your budget, and the features that are most important to you. Whether you prioritize durability, a low profile, or affordability, there’s an optic out there that’s perfect for your Glock 43x. I hope this guide has helped you narrow down your options and make an informed decision. Happy shooting!
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