Assassins Creed Phantom Poison Dart Gun v.3

NOW FOLLOW ME ON INSTAGRAM FOR GEAR AND GADGET UPDATES! This is sort of a combination between the old Poison Dart gun and the new Phantom blade. It looks like the phantom blade shoots small knives. My design shoots a very powerful .625 caliber Cold Steel blow dart. It has fletching on the back to stabilize flight as well which the game accurate Phantom blade does not. I’d like to add a hidden blade knife to this if possible. Just would like it to be like and OTF blade