If you're referring to the firing pin, yes the adapters push it down past the bottom of the top cap. If you want to shorten it, at your own discretion, you could remove the center pin of the 510-901 connector, but make sure the firing pin is still isolated somehow and doesnt touch the sides of the adapter. Don't ask me why I know... But if you do this make sure you have a spare button spring and battery spring. Or some small paper clips handy until you can get replacement springs!