The Nerf Modulus IonFire blaster comes with a barrel extension and dart storage to customize the blaster to suit the mission. Heading into battle? Customize the Nerf Modulus IonFire blaster with the barrel. Going on a covert mission? Remove the barrel extension to create a stealth-sized blaster. Whatever the battle or mission, darts are a must, so keep them close at hand. Slide them onto the blaster's tactical rails; the darts are now within easy reach for quick reloading.