Open Lens vs Tube Red Dot Sights: Which One Should You Choose?
When it comes to improving speed and accuracy, red dot sights are one of the most popular upgrades for pistols, rifles, and shotguns. But not all red dots are the same. Two common styles dominate the market: open lens (reflex) red dots and tube-style red dots.
If you’ve ever wondered which type is better for your firearm setup, this guide breaks down the key differences so you can choose the right optic.
What Is an Open Lens Red Dot (Reflex Sight)?
An open reflex sight uses a single lens that projects a reticle (usually a dot) onto the glass. These sights are:
- Lightweight and compact
- Low-profile, making them ideal for pistols or compact carbines
- Designed for fast target acquisition thanks to the wide field of view
The trade-off? They’re more exposed to the elements and may not be as rugged as enclosed designs.
What Is a Tube-Style Red Dot Sight?
A tube red dot sight looks more like a mini scope, with enclosed front and rear lenses. These sights are:
- Durable and weather-resistant
- Great for rifles and tactical setups
- Often feature more brightness settings and compatibility with magnifiers
The downside is that the “tunnel effect” can slightly narrow your field of view compared to an open reflex sight.
Open Lens vs Tube Red Dot: Key Differences
1. Field of View
- Open Lens: Wide, unobstructed view for quick target transitions.
- Tube Red Dot: Slightly narrower, but still effective for most shooting scenarios.
2. Durability
- Open Lens: More vulnerable to dust, rain, and impacts.
- Tube Red Dot: Rugged and sealed, making it the better choice for all-weather or duty use.
3. Size and Weight
- Open Lens: Compact and lightweight—perfect for pistols and lightweight builds.
- Tube Red Dot: Bulkier, but well-suited for rifles and long guns.
4. Reticle Options and Brightness
- Open Lens: Simple dots or circle-dot reticles, with straightforward brightness controls.
- Tube Red Dot: More adjustment levels, reduced glare, and often night-vision compatibility.
5. Price Range
Both types come in budget and premium options, but tube-style sights generally cost more due to their durability and extra features.
Which Red Dot Sight Should You Choose?
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Go with an Open Lens Red Dot (Reflex Sight) if:
- You prioritize speed and wide field of view
- You’re mounting it on a pistol or lightweight carbine
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You shoot mainly in controlled environments like ranges or competitions
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Go with a Tube Red Dot if:
- You need maximum durability in all conditions
- You’re mounting it on a rifle or duty firearm
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You want brightness flexibility, magnifier compatibility, and ruggedness
When comparing open lens vs tube red dot sights, the right choice depends on your firearm setup and environment. Reflex sights excel in speed and visibility, while tube-style sights dominate in durability and versatility. Many shooters use both—reflex for handguns and close-quarters setups, tube red dots for rifles and tactical applications.
Either way, upgrading to a red dot sight will almost always improve your shooting performance.