This is a completed action toy designed for collectors.
From the Hasbro website:
The elite soldiers of Imperial Intelligence, Death Troopers are encased in specialized stormtrooper armor with a dark, ominous gleam. These soldiers serve as bodyguards and enforcers for Director Krennic, a highly placed officer within the Advanced Weapons Research division of the Empire. Kids can launch into galactic adventures pretending to be an elite stormtrooper with this pump-action blaster that fires glow-in-the-dark darts! This "Star Wars" Nerf blaster features GlowStrike technology that creates glowing light effects and charges the darts to make them glow when fired.
Fire 3 darts in a row with pump-action blasting accompanied by electronic laser blast sounds. Illuminate "Star Wars" battles with the "Star Wars" Nerf blaster! Includes 3 Elite GlowStrike darts.
Requires 3 AAA size batteries (test batteries included).