F Stamps
Ok from my experiance of shipping to Germany and dealing with German Paintball Companies,
Any new Paintball marker i.e newley designed must be sent to the German althorities, these markers are hardly ever seen again, they check that they cannot be altered in any way etc.
Once a marker is recognised any marker being shipped or taken into the air port must have a f stamp which is a capital F in a pentagon stamped into the body in a place which can be seen.
I dont know if this helps anyone out going to Germany to play