The Stryfe is one of my absolute favorite mods! I have the step-by-step guide for the Stryfe available in my Nerf Modification Guide Book. If you are new to modding, I would highly recommend you check out the book. The book will walk you through a stryfe mod, electrical basics, soldering and safety.
A FEW THINGS TO KEEP IN MIND:
The parts list below includes everything you need except solder and basic tools. Eye protection is a must have when modding blasters and during game play! There are several routes you can take with this mod depending on the power level you'd prefer.