Pen spring DA OTF knife Sharp blade and bigger button and slide for hidden blade attachment

i made a sharp blade and the button on the switch so it is easier to use

*DISCLAIMER*

DO NOT USE THIS IN ANY WAY SHAPE OR FORM TO DO ANY THING HARMFUL
TO ANY ONE OR ANY THING!!!

*ALL CREDIT GOES TO DAVINICI85*

UPDATE 4/23/2016:
Do NOT use the blade that is not fixed *UNLESS IT WORKS FOR YOU*

if you try to open this on people it will not open all the way