Just a note to fellow Launcher owners, the firing pin can eventually loosen and unscrew itself making the pressure from the battery push the button down to where it is no longer recessed, and will start firing when you set it down. I found out the hard way when I awoke to a dead battery and somehow the head in my Protank unscrewed itself and fell out when I removed the bottom from the tank. I just took a needle nose and screwed the pin back into the button and all is fine again.
I agree with Absintheur, who I bought mine from, and yes it does have the hardest hit out of all my mechanicals, with the exception of my P+.