NERF HYPER RUSH 40

The Rush-40 is a single-fire slide-action blaster. Like all Hyper blasters, it features an integrated hopper where Hyper Rounds are loaded into. A loading port with a flip-up top is located on the rear of the blaster. The blaster's priming slide consists of the entire top half of the blaster, including the hopper.

There are four tactical rails: one above and one under the muzzle, and two built into the trigger guard.

Official description
Outblast and outlast with the revolutionary Nerf Hyper system! Nerf Hyper blasters feature extreme speed and keep you blasting with massive round capacity! Engineered for velocity, they fire rounds at up to 110 feet per second. They include large hoppers, so you spend more time playing and less time reloading. The rounds maximize speed and capacity with their innovative design and material. Round reload canisters attach to tactical rails for fast, easy reloads. Blasters and canisters each sold separately. The Nerf Hyper Rush-40 blaster includes 30 Nerf Hyper rounds and has large hopper with 40-round capacity. Load the hopper, move the priming slide backward and forward, and press the trigger to fire. Attach reload canisters to 2 tactical rails to keep backup firepower in reach. Includes trigger lock and ready indicator. Eyewear recommended (not included). Canisters and additional rounds each sold separately. Nerf and all related properties are trademarks of Hasbro.
NERF HYPERS series
The Hyper series features high-capacity, hopper-fed blasters for Nerfers ages fourteen and up in mind, similar to the RIVAL series. The blasters use a new type of smaller round roughly half the size of standard RIVAL High-Impact Rounds.