http://www.guns.com/2012/11/15/wounded-warrior-project-clarification-anti-gun/
Here is the pertinent bit:
"Regarding the question of donations and events, we do permit fundraisers that are shooting- and gun-related, such as gun raffles, shooting competitions, etc., and were incredibly appreciative of those who are willing to give their time to host or participate in an event. Likewise, we gratefully accept donations from companies and individuals connected with the gun industry."
Essentially they aren't going to license their logo on weapons of any kind. Still, if I ran a charitable match, I would consider giving to HAVA or Chris Kyle's Hero Project.