I was just cleaning a couple of the guns I decided not to take with me to the range this morning, both of which are new this year and both of which have the internal lock. I have never once moved this lock from the "fire" to the "safe" setting, but while I don't use it, it has never caused me any problems. I hate that it symbolizes the intrusion of the nanny state, but for all practical purposes the lock has no effect on my use of the gun. My oldest son and his fiance are going to try to have a child as soon as they get married this summer, which will make me a grandpa. It will also mean I'll have to take my safe gun storage procedures up a notch. Who knows? I may even use the internal locks on guns that have them as an added measure of safety.