NERF Rival Ammo

Rival blasters may not be the most practical or economic way to nerf, but I'd challenge anyone to unload a full hopper from a Nemesis or Perses and not have a massive grin on their face.
Inconsistencies with the quality of 3rd party Rival balls (or HIR - High Impact Rounds as they are marketed by Hasbro) mean that the only real option for reliable ammo is official NERF balls.
No messing about with these ones. They're the real deal, genuine NERF HIRs for dirt cheap.