I agree that you should use the trigger correctly, it goes without saying. However, I was very surprised at how little pressure was needed to lock up the firing pin and would be so easy to do when wearing a glove, brushing against the trigger when putting your finger through the guard, or even just resting your finger against the trigger prior to taking a shot (we all do it, don't we).
I'm just surprised that that much thought had been put into this item, but then allowed this problem to sneak through. As mentioned in my post, this is an issue that crops up on a fairly regular basis according to my friend at Fultons.
Cheers!