After using iron sights for years, I switched to a Holosun 507C on my Glock 45 and it felt like I was learning all over again. At first, finding the dot was hard, but once I got it, my follow-up shots and how I tracked targets got way better than I thought they would. I still like iron sights but the red dot just adds something that works for me now.
I learned how to shoot handguns many years ago, first by my Dad in the back yard with a S&W Model 19, Then in the Army with a 1911, all with iron sights. Iron sights were my friend. It didn't matter if I had a revolver, a 1911 or as of late a M17 or Sig P365, all had irons and irons were always there, didn't have to worry whether they were there, day or night, some even had night sights. Speaking of night sights, just because your handgun has night sights does not auto magically mean you will be able to shoot in the dark. When the sun goes down or the lights are turned off the world changes around you. If there is a chance that you might find yourself in the dark and having to shoot it's best to get some training into shooting in the dark.
Moving right along, As time went on there were different sight systems introduced. Scopes added bulk and was composed of a small niche of competitive shooters and hunters. Laser sights actually, depending on their configuration, were a worthwhile addition with limitations, those being how they were turned on, the useful range and the issue that the red dots could not be seen in bright light. I did try and still have two handguns with lasers on them, both are Crimson Trace, are mounted in the grips and have an activation button so that when you grip the handgun to shoot they automatically illuminate giving you an accurate aiming point. If you have to physically turn on the laser to use it, then it's about useless in any kind of tactical situation.
Now we move on to the topic of discussion, the red dot sight. Personally I don't much care for them. That, however, does not mean that they are not useful. Several years ago a group of us who were more curious than anything else got together and booked a handgun class out at Vortex Edge out in Barneveld. it essentially was an introduction to shooting a handgun with a red dot sight.
Before I go on, If you ever want first-class firearms training, do not hesitate to take a class out at Vortex Edge. Their instructors and training are second to nobody else, including the big-nam training centers you hear about all the time. They are here in Wisconsin and no matter where you might have to drive in from it's worth the drive. The training is fantastic and at a fraction of the cost of what you would pay elsewhere. All firearms, ammo, targets and instruction is provided. Just show up at their door ready to shoot, learn and have a fantastic time. And by the way, I am in no way connected to Vortex other than being a very happy and satisfied customer, long time instructor that recognizes and appreciates quality training when I encounter it. I do not get paid for these comments, they are simply words of wisdom from me to you,
Continuing on. All training starts in the classroom where you learn the basics about what you are about to learn. The firearms that we used were Glocks. I am not a Glock person and at the time to me a Glock was a Glock. Looking back they were either 17's or 19's. There were both paper targets as well as plates and as I remember and this could be wrong, set up at 30 feet. From there we learned all about how to shoot the red dot. When we left there we all could accurately shoot a pistol with a red dot installed.
Do I have a red dot? Yes I do. It's a Vortex Venom 6 moa. It is currently sitting in it's box with adapter plates for Sig M17 and P365 9mm pistols. It has been mounted at various times on both handguns. I do not keep it mounted for many reasons, primarily because I do a lot of target shooting, all done with iron sights. A red dot does not lend itself to concealed carry. The extra bulk just does not go along with trying to hide a handgun. My level 2 OWB holster is cut to allow for a red dot or an under the barrel laser. Both have been mounted at various times. The P365 is a level 1, IWB also cut to allow for a red dot.
With the red dot installed it digs into my side and is totally uncomfortable. Other things I find as an issue is that it is battery powered. While the claim on battery life is 35000 hours. Shortly after I mounted it on the M17 I went out to the range to do some practice shooting and Lo and Behold, the battery was dead. Now this was most likely a battery issue, since the replacement has been installed for years and still works, but it does point out the fact that it is battery operated and thus not 100% reliable due to the battery.
I don't have a red dot mounted, but I still follow along with the various models and improvements. I do admit that if the new Vortex Defender - CCW solar micro red dot ever comes with a green dot I will probably buy it.
So there is my experience and take on red dots. It is up to you whether you decide to try one here is a pointer worth listening to. Sight in the red dot to hit exactly the same spot as your iron sights. Depending on how you hold your handgun the spot where the red dot is in the window does not necessarily have to be aligned with the irons. This is because the sighting principles are different between the two sighting systems. If you align the red dot to the point of impact when shooting irons, then when you raise the pistol like you do when shooting irons, both the irons and dot will show up at the same time and you won't have to hunt for the dot.
Have fun, Good Luck and Good Shooting