Is it worth/useful for training purposes to have a system that avoids racking the slide for each shot or not if there is no recoil and the "slide" is static? A reset trigger or SIRT provides repeated shots. But if there is no recoil are repeated shots useful? I shot a SIRT at a laser range which was "fun" but it was very easy to be accurate with repeated shots where there was no recoil. It is cheaper to buy a laser cartridge that will work in all my Glocks and easily adapted to my revolvers draw the gun, a real gun, and take a shot. I would not be engaging multiple targets but I would think, the draw, presentation and first shot is the most important.
Or is it better to avoid the aggravation of racking the slide for each shot and have the ability to engage multiple targets even though there is no recoil? I just ordered a Dryfiremag as I think independent of the the visual laser shooting concept it has merit for me at this time.
There are actually multiple answers here: if you get a dryfiremag, you can't use a laser that relies on the firing pin to trigger. And the ones that work off sound don't necessarily work wih it, either.
Yes, there is value in using a laser... IF you also get a laser target. If you are busy looking for where the laser hits, you are reinforcing a really bad habit.
An automatic trigger reset has a lot of value for dry fire, and keeps you from racking that slide in practice.
I believe the only laser that works with a dryfiremag is the laserlyte Glock replacement barrel. Though those are also pretty crappy; I've worn one out already.
Dry fire ammo is free.