I guess I understand the idea of being able to decock without just pulling the trigger for disassembly, but having a big button on top of the slide, even thought is flat to the slide, seems questionable to me if it leaves you with a dead trigger. But YMMV. And yes I was sure it was a dead trigger. I carry primarily DA/SA pistols, so I am familiar with using a decocker to have the long DA pull for carry.