There are three primary types of red dot sights defined by their mounting profile and housing design. The fundamental difference between these types is the height of the optic above the slide or rail, which determines how the optic interacts with the firearm’s sights and how much it affects the shooter’s field of view. Choosing between these types depends on whether you prioritize a clear view of the iron sights, a compact footprint for concealed carry, or a stable platform for rapid target acquisition.
What are Reflex Sights?
Reflex sights are the most common type of red dot optic, characterized by a large glass window and a housing that sits relatively low to the mounting surface. This design allows for a wide field of view, making it easier to track moving targets or identify threats quickly.
Co-witnessing with Iron Sights
Reflex sights are designed to be used in conjunction with existing iron sights. Because the housing is low-profile, the front and rear sights remain visible through the glass. This provides a secondary aiming system if the electronics fail or the battery dies. For a shooter who requires a redundant backup, a reflex sight is the standard choice.
Mounting Height and Visibility
The height of a reflex sight is typically low enough that it does not obstruct the line of sight to the iron sights. This makes them ideal for standard duty use where the user wants the speed of a dot without sacrificing the reliability of a mechanical backup. These optics generally sit in the mid-range of the market in terms of cost and complexity.
Where these choices show up in our reviews
Prices across these 3 run from $124.99 to $236.87; each one has a full review here.
Vortex Optics Sparc II
Understanding the visual footprint is key, so learn how to choose your reticle size to ensure perfect visibility at your preferred range.
$137.64 price checked August 2026
What are Micro Red Dots?
Micro red dots are defined by their extremely compact housing and small glass footprint, designed specifically for concealed carry and sub-compact firearms. They prioritize a minimal physical profile over a wide field of view.
Concealed Carry Advantages
If you carry a firearm concealed, a micro red dot is often the only viable option because it minimizes the “print” of the optic against your clothing. These sights are built to fit on small slides where a standard reflex sight would be too large to mount safely or comfortably.
Trade-offs in Field of View
Because the glass surface is smaller, micro red dots offer a narrower field of view than reflex sights. This means the shooter must move the firearm more to track a target across a wide area. These optics are generally positioned at the higher end of the price spectrum relative to standard reflex sights due to the specialized engineering required for their small size.
What are High Profile Red Dots?
High profile red dots feature a housing that sits significantly higher off the rail, often designed to clear the front sight of a firearm entirely. These are used primarily in competition or for specific defensive roles where the dot must be visible above the iron sights.
Competition and Rapid Acquisition
High profile optics are favored in competition because they provide a clear, unobstructed view of the dot. By sitting higher, they ensure that the front sight never obscures the reticle. This allows for extremely fast target acquisition and consistent placement during rapid fire.
Profile and Concealability
The primary trade-off for a high profile optic is its size; these sights are difficult to conceal and can be cumbersome to draw from a holster. They are intended for open-carry situations or competition environments where the user does not need to worry about the optic’s footprint against their body. These typically sit in a similar price bracket to reflex sights but are less common in the civilian market.
Which Red Dot Type fits your needs?
Deciding which red dot type to use depends on your specific operational requirements and the firearm you intend to mount the optic on.
Do you need to see your iron sights?
If you require a backup system and want to see your iron sights through the glass, a reflex sight is the correct choice. If you do not care about seeing the iron sights and only want a clear dot, a high profile optic may be preferable.
Do you carry concealed?
If you carry a firearm concealed, you should prioritize a micro red dot. The smaller footprint is essential for keeping the profile of the firearm low and comfortable against the body. A standard reflex sight will likely be too large for a concealed setup.
Is the optic for competition or duty?
For competition use where speed and a clear view of the dot are paramount, a high profile red dot provides the best performance. For general duty or home defense where a balance of speed and reliability is needed, a reflex sight offers a versatile middle ground.
Red Dot Sight Type Comparison
| Type | Best-Fit Buyer | Main Advantage | Main Compromise |
|---|---|---|---|
| Reflex Sight | Duty/Home Defense | Co-witnesses with iron sights | Larger footprint than micro |
| Micro Red Dot | Concealed Carry | Minimal profile for carry | Narrower field of view |
| High Profile | Competition | Unobstructed dot view | Difficult to conceal |
Browse our other Red Dot pages
- Choosing the Best Red Dot Sight for Rifles
- The Red Dot Sights That Work Best with a Magnifier
- Which Red Dot Sight Is Best for Compact Builds?
- Best Durable Red Dot Sights for Heavy Duty Use
- The Red Dot Sights That Work Best for Hunting
- Which Entry-Level Reflex Red Dot Sights Are Best for Competition?