Amazon.com: NERF Rival 50 Accu-Round Refill, Includes 50 Accu-Rounds, The Most Accurate Rival Rounds, Compatible with All Rival Blasters : Toys & Games
Nerf Rival 60 Accu-round Refill : Target
Nerf Rival Edge Series Saturn XX-1000 - Legacy Toys
Nerf Rival 30 Round Edge Series Official Refill Pack, for Nerf Rival Blasters - Walmart.com