I may have just bought too many Nerf blasters - think it should keep my kids busy for a while (but I will be bankrupt from buying different darts and other ammo)... :
Amazon.com: NERF Elite Titan CS-50 Toy Blaster - Fully Motorized, 50-Dart Drum, 50 Official Elite Darts, Spinning Barrel - for Kids, Teens, Adults : Toys & Games
Amazon.com: NERF Ultra Select Fully Motorized Blaster, Fire for Distance or Accuracy, Includes Clips and Darts, Outdoor Games and Toys, Automatic Electric Full Auto Toy Foam Blasters : Everything Else