well i reconise the knife as a Buck imitation. Which are generally very poor quality, both the steel used and the construction if the knife. I have plenty of similiar knifes failed on me. Some simply (and literaly) fel apart, one failed during light stress and cut me and others started to get HUGE amount of play, making the bladelock totally unreliable.

Get at least a decent 440C or AUS6 steel knife. Knife's without any mark of the steel used are generally very poor, so is 420HC used in many cheaper knifes.