Sure, mechanical sentries and AirSoft turrets are novel, but there's nothing like whipping out an electromagnetic pistol to show folks you mean business. The Gauss GP-219 looks like it came straight from level 5 of Duke Nukem 3D, and rocks a PIC microcontroller, dual coils with "precision pulsing" to fire steel projectiles, twin infrared sensors to assist in positioning, and even a laser sight to keep your enemies pegged. Powered by an NiCd battery pack, this bad boy also features a bar display to track "capacitor bank charge progress," battery and fault LED indicators, and is "completely silent" when fired. The wildest part about this science-fiction dream come true is how effective it actually is, so be sure to click on for a few more pictures, and hit the read links for all the nitty gritty and even a few live action videos.
Read - Gauss Pistol GP-219
Read - Pistol whipping in action, Nukem-style