Modified flywheel Vulcan. Custom mod and integrated with firefly stock. OFP cage and Valkyrie motors, setup to run on 3s Lipo. Custom LEDs run off separate 9v battery. Haven't come up with
NERF-Mod - Vulcan Retro M60 by JaroKrieg on DeviantArt
Nerf Vulcan mod - Album on Imgur
Nerf Gun Modding | bit-tech.net
Nerf Vulcan Mod | Etsy
Fixing and Hacking the Nerf Vulcan | WIRED
Modified Vulcan EBF-25 - YouTube
Steampunk Modified Nerf Vulcan EBF-25 gun
Nerf Vulcan + Super Stryfe Hybrid MOD - YouTube
My Flywheel Vulcan: A Rampart// Details in a comment : r/Nerf