The toothlock ?

[Kar98k]

I personal Love this little knife would like a slight increase in the blade to a 3.5 inch blade. Also I wonder where there is little to no advertisements made by sog for the toothlock

 

[Cotherion]

Own one, after tightening the pivot it had no blade play. Very easy to unlock. I had to ground off the index finger 'horns' though. I like it and the san mai is nice. The tip is thick too