Amazon.com: Shooting Target for Nerf w/Toy Guns and Foam Darts, Upgrade Digital Shooting Game with Touch Screen Practice Target, Electronic Scoring Targets for Nerf Gun for Kids Aged 5 -13 Boys, Girls :
NERF Upgrade Kit: 3 Shells, 9 Darts, Shell Holder
Nerf Modulus Firepower Upgrade Kit - Mediator Bar - ToyShnip
Upgrade Maintenance Kit for NERF CS-18 N-Strike Elite Rapidstrike
Nerf Fort Night SP-L 5KG Modification Upgrade Spring Coil Blasters Dart Toy - Etsy
Modify Upgrade Spring Coil for Nerf Elite SurgeFire Blaster Foam Dart Toy | eBay
Worker Mod Stefan Short Dart Upgrade Kit for Nerf N-Strike Elite Delta Trooper - BlasterMOD