The engineers building ridiculous dart blasters that Nerf won't touch - The Verge
How to Modify a Nerf Bullet/Dart : 4 Steps - Instructables
The Nerf Blaster Modification Guide: The Unofficial Handbook for Making Your Foam Arsenal Even More Awesome: Goodman, Luke: 9780760357828: Books: Amazon.com
The engineers building ridiculous dart blasters that Nerf won't touch - The Verge