I got a new Buck Mustang a few days ago. It's thin and very slicey, has a grippy handle and is easy one had open. 75 bucks for this Buck 
However, it was dull as a butter knife and had no sharpened tip at all. The tip end of the knife was as thick as the spine. I spent an hour sharpening a tip onto the blade. The worst edge I've ever seen on any knife from any company.
Also, the edge of the blade hits the back spacer when closed. So it has an auto dull feature.
I'm a big Buck fan and I love 420 HC, but I would not buy this knife again. Stick with the Spitfire if you like one hand opening 420HC back locks. It's way better than the Mustang.
However, it was dull as a butter knife and had no sharpened tip at all. The tip end of the knife was as thick as the spine. I spent an hour sharpening a tip onto the blade. The worst edge I've ever seen on any knife from any company.
Also, the edge of the blade hits the back spacer when closed. So it has an auto dull feature.
I'm a big Buck fan and I love 420 HC, but I would not buy this knife again. Stick with the Spitfire if you like one hand opening 420HC back locks. It's way better than the Mustang.