I don't really know if this has been talked about yet, so im sorry if this is a repeat comment, but it looks as thought the spring-loaded missiles on the Falcon are activated by pressing inside the access ports on the forward mandibles.
I cant tell if the missile tail would be visible from the top, or if there would be a plate between your finger and the projectile. Again, this may not be news to anyone but i just noticed and thought it was a very interesting way to implement those ports that before have (on recent millennium falcons) been identified using only stickers.