Hello Group! - I have a Vortex Red Dot sight on my G34 and mainly shoot it in IDPA competitions. The Gen 5 G34 comes with a cut-out to mount your sight. I do, however, prefer Trijicon night sights for my G19 and often shoot competition with that as well.
Red dot sights do take some getting used to, but once you master them, it’s well worth it. Once you make your adjustments at the range it becomes easier to acquire your target. I sighted mine at 7, 10 and 15 yard distances. There isn’t any emphasis on front sight focus. Draw your handgun and get your dot on target. I discovered that my speed increased. All other fundamentals apply. I believe Red Dot sights are worth looking into for any shooter.