Microtech Troodon knife automatic otf out the front opening knife double action.  Microtech Knives Microtech Troodon OTF Front Opening automatic knife is a Dual Action Auto Fire and Auto Retract that is 7.36" open and 4.20 inches closed with a blade that's a tad over 3" and weighs in at an average of 2.5 ounces.  Most models come with a glassbreaker and sheath or nylon drawstring pouch and are made of 6061 T6 Aircraft Aluminim and the blade is S30V Stainless Steel.  All come with a pocket clip.