Would like to trade a NIB Ultratech ZBP Tanto for the same with S/E drop point blade. Knife misfired a couple times when I first had it, I’m guessing b/c it was kept in my unheated shop during frigid temperatures. I sent it to Microtech for a tuneup and a sharpening. Am including the invoice from that. I can send a short video but am unable to attach it. Thanks for your interest.