a piece of plasticard + some greenstuff to fill, but you need to have the right skills.
Contacting FW is recommended very highly, they'll send you a replacement. If it taks too long and the whole thing gets out of hand they might even send an entire new kit, but don't get your hopes up. In any case what you should get from this is: FW costumer service is excellent even if slow sometimes.
_________________The Dark Moon Kabal
The Biggest Kabal ever, be sure to check it out if you haven't, old and new units.
The Biggest Dark Eldar Apocalypse force you'll find on the net.
My Eldar Facebook Page, feel free to join. All Eldar factions allowed!