This WORKER MOD Short Darts Stefan Modding Kit for Nerf Delta Trooper Blaster or Nerf Retaliator designed for nerfers enjoy the power of short darts. Stefan nerfers like the improved accuracy and power of the darts, making use of this kit modify your Delta Trooper or Retaliator into a stefan compatible blaster, together with the 12KGS spring in the kit that help promote darts range.