Those rifles are certainly taken from
Lucke OSP WW1 pack.
http://forums.taleworlds.com/index.php/topic,159037.0.html
Topic locked & reported. Download links removed. You cannot distribute content you do not own unless you have permission to do so. Giving credits doesn't mean you have permission to use their stuff. Make sure Raddeo agrees also. Send me a message when you're 100% sure you've got permission and i'll unlock the topic.
EDIT: The problem isn't with the OSP pack, but with Raddeo's stuff. If he grants permission, then it's fine.