Updated* MiniShooter (print-in-place) by ma-unique | Download free STL model | Printables.com
Blender Nerf Dart free VR / AR / low-poly 3D model rigged | CGTrader
My homemade Nerf blaster design called the SLAB (Silly's Lever Action Blaster). 3d printed, hits really good, and is a TON of fun to use! : r/3Dprinting