This is the best 2 in 1 we`ve ever seen, and it`s got nothing to do with not taking two bottles into the shower. The Nerf is a super-powerful water pistol that doubles up as a dart gun. The Nerf is a big favourite here at Boys Stuff because like all the best products, it`s both simple and great fun to use. All you have to do is place all the darts into the barrels with the suction cups pointing forward, use the gun`s air pressure pump to provide the power, then release the pull to fire four accurate sucker darts.