Here's my steampunk Slingfire. worker short dart conversion kit with full metal internals. one of my custom scar barrels. 9kg spring. hits around 130fps. : r/Nerf
Slingfire Brainsaw - Etsy
nerf slingfire" 3D Models to Print - yeggi
Borderlands Slingfire Mod- The Infinity Rifle : r/Nerf