Pure S.W.A.G. (silly, wild-assed, guess) from here. The mag follower must include a "recoil" devise that, upon firing pin release, provides enough rearward slide "impulse" to allow sear/trigger reset? :blink:I can't picture how it works since the Glock is striker fired.
Thank you for the very detailed report!Received today. tested in my G30SF. Works. Important to realize that the magazine contains springs and levers. You cycle the slide on the empty pistol to set the trigger. Then you insert the dry-fire magazine. Insertion is quite stiff. Then you pull the trigger for the initial release to release the trigger mechanism in the pistol and switch over to the spring mechanism in the magazine. The first trigger pull is very heavy. AFter that you are working the trigger into the magazine's spring and lever set, and not operating the pistol's striker or springs. After the initial release the magazine's springs provide the trigger pull and resistance. It is vital to understand that you are not interacting with the pistol's mehanism, and that the perceived trigger pull is due to the magazine's internal springs, not the pistol's striker spring. I ordered the "light" version of the large magazine, and the magazine's trigger pull is very similar to my G30SF's own trigger pull, as I have a Ghost connector and a 4-pound trigger spring. Once you are operating the magazine's spring and lever system, the trigger pull is consistent and the reset is very perceptible. However, the magazine does not provide a full length forward trigger travel. The trigger advances forward only a little way past reset. So the magazine works very well for dry fire without partially or fully cycling the slide. I have a TLR laser on my G30SF, so I can now easily observe the laser's stability on the target as I repeatedly dry fire (fire, reset the trigger, and fire again) with the new magazine gizmo. I don't touch the slide, I don't take my trigger finger off the trigger, I don't change the position of my off hand at all (as I am using a two-handed grip on the pistol).
So the procedure is to cycle the slide on an empty pistol, insert the magazine, pull the trigger for the initial transition from the pistol's springs to the magazine's springs, and after that the trigger is consistent and the reset is consistent for continued dry fire practice without having to touch the slide at all.
There are absolutely no modifications to the pistol required with this dry fire magazine.