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As optic technology evolves, pistol red dots and rifle reflex sights have surged in popularity among those seeking faster target acquisition and enhanced precision. When choosing the best red dot sight for your firearm, there are several factors to consider, such as brand, footprint, dot color, and whether you want an open or enclosed (or closed) emitter. This guide will delve into that last consideration, which may be one of the most important elements to consider when selecting a red dot sight for your pistol, rifle, or shotgun.
What Is an Enclosed Emitter Red Dot?
Let’s first discuss how a red dot sight works. Each optic features an emitter that projects a laser beam onto a glass lens to provide a bright reticle for precision aiming. An open red dot reflex sight has an exposed emitter that can collect dust, lint, water, dirt, and other particles that can interfere with the beam, causing distortion of the reticle or preventing it from being displayed entirely. Closed-emitter red dots feature an enclosed emitter protected by a second rear lens that acts as a protective window to view your reticle. Open-emitter red dots simply have an exposed emitter projecting onto a single lens.
What Are the Benefits of a Closed Emitter Red Dot?
The main advantages of a closed-emitter red dot sight are that they are more durable and easier to clean. Enclosed emitter sights have a larger, more robust housing that disperses impacts much better than an open emitter red dot. However, the most important benefit of these optics is that the emitter is immune to dust, snow, dirt, and other obtrusions. If your rear lens gets dirty, you can simply wipe it off and continue firing. When debris obscures an open-emitter red dot, it requires more thorough and frequent cleaning to dig in tight crevices and remove any obstructions.
If you’ve only used open-emitter red dots, switching to an enclosed-emitter red dot is seamless, as they offer the same functionality in a more durable format. The only adjustment you might need to make is a new holster to accommodate the larger optic, specifically, an optic-ready or RDS holster. There are options like the Trijicon RCR that is the enclosed-emitter version of the Trijicon RMR, offering the same footprint and features with the durable construction and impact-diverting shape of their renowned ACOG scope.
What Are the Benefits of an Open Emitter Red Dot?
An open-emitter red dot is lighter and less bulky due to the single-lens design. The open design also provides a wider field of view (FOV) for quick target acquisition. Since fewer materials are involved in manufacturing open reflex sights, they are usually more affordable than closed-emitter red dots.
While enclosed-emitter red dots are undeniably more durable, that doesn’t mean open red dot sights aren’t. Several high-quality red dot sights, like the Trijicon RMR Type 2, notably offer outstanding durability through unique housing shapes and premium materials. Others, like the SIG SAUER ROMEO Zero Elite, have an enhanced steel shroud for extra protection.
Which One Is Right for You?
The best red dot sight for you depends on your needs and application. For concealed carry, many people prefer an open-emitter red dot due to its compact size that results in minimal printing (when your firearm or optic can be seen through clothing). The cleaner, wider FOV also allows for rapid target engagement when every second counts. With a proper RDS holster, your open emitter should be protected anyways. However, lint and dust can still accumulate on the emitter if you don’t properly clean and maintain both your handgun and the holster.
Closed-emitter red dots are still a viable choice for concealed carry, especially if you live in areas with harsh weather conditions. The smallest amount of water or snow can impact the emitter and render your reticle useless until properly cleaned. If you face inclement weather conditions often, an enclosed-emitter red dot may be the better choice for concealed carry, as you only need a holster that protects the rear window to ensure you always have a reliable aiming point after you draw your weapon. The Aimpoint ACRO P-2 is an excellent choice for handguns, especially if you shoot powerful calibers with strong recoil.
For rifles and shotguns, an enclosed-emitter optic is most likely the best choice for you. They are usually designed to handle harsher recoil, and there are options like the Trijicon MRO HD red dot sight that are specifically designed for both-eyes-open shooting with rifles, shotguns, and carbines. Closed-emitter red dots are ideal for tactical applications, as you’ll often face challenging environments and perform strenuous activity while wielding your firearm. While hunting, you tend to encounter muddy landscapes while your firearm bounces around as you stalk your prey and scout for the perfect location. The extra durability closed-emitter optics provide is paramount on the hunting grounds.
Closed Emitters Open up Endless Possibilities
When harsh conditions and rough handling threaten your optic’s integrity, an enclosed-emitter red dot sight is your solution to stress-free sighting. OpticsPlanet carries the most popular red dot and reflex sights to ensure you find the perfect fit for your firearm and application. Whether you’re seeking the speed and precision of an open-emitter red dot such as the Vortex Viper or Holosun 510C or are looking for the extra protection of a closed-emitter red dot like the Holosun EPS Carry or Vortex Defender CCW, we have the exact optic you need at a price you’ll love. Make sure to check out all our Red Dot Sight Guides to learn more about the benefits of pistol red dots and how to choose between a red or green dot reticle.
