In this nerd-tastic viral video, YouTuber BrittLiv demonstrates her specially Nerf Vulcan gun modified into a fully automatic sentry cannon. Not only can the computer controlled turret shoot automatically at specified targets, but it can also aim completely by itself. 

For nerds daring enough, she has posted the full instructions and schematics online.  

Now, her two week video has gone viral this week, garnering over 200,000 hits