For some people, having to focus on three varying points can be very difficult.
Instead, you could have a singular focus on a red dot overlaid on your target.
Wherever the dot appears, you will hit.
This is a result of the effects of reduced parallax in non-magnified red dot optics.
No need to perfectly center it.
Simply get the dot on the target and press the trigger.
For additional information, see our articleThe Problem with Parallax.
Another valuable benefit to red dots is their ability to provide good contrast in low-light situations.
A red dot will crisply and definitively show you your reference point.
Pros and Cons
One downside that should be considered for red dots is a need for batteries.
This triple-alignment assures you are as level and in line with your target as possible.
This can be highly valuable in defensive situations so you are not blindsided.
Be safe out there and happy shooting!
Read part one:Why You Need Iron SightsRead part three:Do You Need a Rifle Scope?
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