CRKT Razelcliffe Compact Framelock Flipper Folding Knife, 4021
[CRKT4021]

I know it's very budget oriented but there is no slipping action. The knife open has the back scale digging into your index as you use it.

Buy the full size CRKT Razel or little one from a few years back, avoid this mess. Terrible ergonomics, action and experience with this knife.