NERF SS RAINSTORM

The Rainstorm is a pump-action soaker that fills by putting the muzzle into water and pulling back the pump handle. It has a large, oversized iron sight.

Official description
Surprise everyone as you unleash a drenching blast of water from the Nerf Super Soaker Rainstorm water blaster! This Super Soaker blaster is designed with a barrel that streams a downpour of water to soak the competition. Place the front of the blaster in water and pull the plunger handle back to fill the tank, then push the handle forward to release a soaking surf of fun. It's easy to use, so kids, teens, and adults can all blast into outdoor water battles. Get outside, get active, and get soaked! Tank capacity is 22 fluid ounces (650 milliliters).
Super Soaker brand
Super Soaker is a brand of water blasters and water-based products currently owned by Hasbro.