Has anyone used electronic systems for pistol training? I'm interested in getting a system as I like the idea of knowing for sure what would happen, for example, if I released the shot earlier.

Seems a lot of money though if its a 'play with once or twice and forget about it toy'...

Also how do they connect to the pistol - does a laser fit into the barrel? Do you need to fit a microswitch to the trigger?

Cheers
McT