Nothing is free, and with all new technologies there are perceived issues and a learning curve. Because a smart phone is more difficult to use than a landline should not cause is to eschew the smart phone. Better to learn the new technology and take advantage of its benefits. A skilled man using advanced technology will surpass what a similarly skilled man can do without it.
So here we go.
1). Problem Picking up the dot. This is an area where everyone over thinks the issue. There are entire articles devoted to this with so many varying proposed solutions many guys simply say its too much and dismiss the dot altogether. So here is the simple way...too simple in fact.
If your dot is co-witnessed to be on your front sight (either on top of the sight, just below the top, or on the tritium vial), and if you have trained countless times to visually acquire that front sight, what will you automatically begin to see when you present the pistol and catch the sights?
Wait for it....the dot of course. If you see the front sight, you will see the dot. Now what happens is that as your eye becomes accustomed to seeing that dot, it will always look for the dot and actually begin to ignore the irons. That is when using the dot becomes faster than using the irons.
Does it take some effort? Of course it does.
Here is how we train it (this man had very little experience with these red dot pistols).
The problem is that Peter Pistolshooter picks up a red dot pistol...looks through the optic not knowing what to look for or what he is actually seeing, and gets confused. Then with all the so-called experts giving him advice, and drops the entire idea as something that would take too much effort.
Co-Witnessed sights will teach you to use the red dot. Eventually - everything takes effort - you will see the dot and ignore the irons. And that is that.
2). Concerns With Height Over Bore. Not a big deal as long as it is not exaggerated. Think of an M4 with that Aimpoint as close to the bore line as the weapon will allow. Nice, easy to use, and accurate. Now think of an old school AR-15 with the carry handle and a scope mounted atop that carry handle with a couple of inches more height over bore.
Is that weapon as easy to use? No its not. So height over bore is a factor. Generally speaking, the lower it is the better it is. Some weapons and some installation methods allow for the lowest possible mounting...others do not. The take-away is this - Lower Is Better.
3). Iron Sights Obscuring the Dot. I honestly don't know how that is possible. The dot is not ON THE TARGET like a laser. The dot is projected on the screen you are looking through. So unless you have obtained extra height (even above the traditional suppressor co-witness sights of about .300 - .315), they will not be in your way. Remember, the red dot is used by itself, not in conjunction with the sights once you get past the beginning phase of learning.
4). Rain Gets On My Lens. Well, yes. It also gets on the Aimpoint Micros used by SWAT and Special Operations guys, on people's eye glasses and even on windshields. What do they do? The same thing that you do when rain gets on your glasses. Wipe them off. And if you need to take a shot in a downpour, don’t worry…we did just that in Colorado last year. And you know what happened? Nothing. Guys could still hit what they wanted to hit. The waterproof nature of the RMR won the day as some lesser quality red dots stopped working as soon as they got wet. (Nothing is free...but quality and you will never be disappointed).
That said, there are products that are used to keep rain from “sticking” to glass such as Rain-X. They all work to a degree.
One gent was writing that on the range the rain pooled into the window of his RMR and it was an issue. Still, I suspect if I put a bad guy target for an emergency shot up close he would have made the shot with no loss of time…and if the shot required greater accuracy, there would be time to wipe the lens, just as there would normally be time to wipe off your eyeglasses. In the above image you see two LE guys shooting 50 yard steels in the rain.
There are a group of guys using these that like to swim before they shoot people and they report no problems. Maybe they should read more pundit's opinion on the internet, I don't know. Try this - wait until the next rain storm and test out your skills with each system - irons only and red dot and see what is possible for yourself, with an open mind.
5). Problems With Batteries. So just because your smartphone may run out of juice is no reason to not use it. Same with this. If we agree that there is some maintenance involved, then changing out the batteries becomes a planned even, just like changing out your carry ammo once a year.
For those overly worried about this, there are the dual illuminated models (powered by tritium and fiber optics) which serve well.
But regardless of all that, remember that your pistol has two sighting systems (three if you add a laser). If you detect that your dot has gone out due to a malfunction or a dead battery, simply make it an immediate action to shift immediately to the iron sights.
Again…simple. This new technology is allowing combat shooters to be faster and more accurate than they ever could have been with iron sights alone. If you want to do likewise, don't dismiss it.