Hey Uli and Flo,
I went to college in Braunschweig between 2000 and 2007.
Uli, I didn't know there was a paintball bundesliga... I saw that you're looking for rubber parts for your Barracuda. You can find them under "weatherstripping" at laysons.com . They're not cheap and I don't know if they ship to Germany.
Gruesse,
Steve