wikiHow: How to Make a Nerf Gun out of Household Items - YouTube
DIY NERF GUN That Shoots! - YouTube
Amazon.com: Yanscian M416 Semi-Auto Nerf Rifle Gun Model Building Toy kit Set 629 Pcs DIY STEM Toy Machine Gun Weapon Building Block Brick Gun for Kids & Adults Compatible with Lego :
Building A Better Nerf Gun | Cool Material
The engineers building ridiculous dart blasters that Nerf won't touch - The Verge
Build the wildest NERF Blaster you can imagine with Amazon's new N-Strike Modulus design tool