Hi. Im' new to the forum. I just got my first Smith & Wesson. It's a 4" 22A that was given to me by a friend who is handicapped and can no longer use it. I have not fired it yet. I am having trouble field stripping it. I ejected the mag and locked the bolt back. I pushed the takedown button to remove the barrel but the button won't budge. It says in the manual that "substantial pressure may be necessary" but this thing is not moving. Any help would be appreciated.