ZombieStrike SledgeFire a month or so ago. I've had a lot of questions about spare shells for the SledgeFire and, at the time, the only way you could get more shells was to buy another SledgeFire. However, I also knew that eventually Nerf would release those spare shells on their own. Well, now they're released! I pre-ordered mine and just got a notification that they're shipping now.
HasbroToyShop.com to order yours!