Nerf Hyper Rush-40, Siege-50 and Mach-100 review: where the rubber meets the foam - The Verge
If Nerf Hyper rounds are 13-14mm diameter, then it stands to reason that with minor modifications the Sportsman would be able to fire them. With a massive hopper it may make for
NERF HYPER lineup fires at 110 fps with 3-4x round capacity - 9to5Toys
Nerf Hyper Siege-50 Pump-Action Blaster - Entertainment Earth
100 rounds for Nerf Hyper Refill Hyper Darts Toy Gun Bullets for Hyper Blasters Stock Up Hyper Games| | - AliExpress
Nerf reveals Hyper, its next-gen high capacity blasters with the fastest reloads ever - The Verge