Either:
(1) Get a European permit from your cop-shop (free
or
(2) Strip the rifles and send the unrecogniseable/important bits on ahead. Ship the rest as 'parts'. Most Cops won't be interested in 'spares, which is what they'll be. Then reassemble on arrival. (This latter solution from Didier the Gendarme Sarjeant who's sitting beside me right now drinking my Whisky - phwoar wot a hunk!!!!! (says the wife) <img src="http://jsramsbottom.co.uk/bbs/e/icon_biggrin.gif" alt="Big Grin" width="15" height="15"><!--graemlin:--> <img src="http://jsramsbottom.co.uk/bbs/e/icon_biggrin.gif" alt="Big Grin" width="15" height="15"><!--graemlin:-->)

regards
BC