Saw some videos on the Reddit. Dude had to push real hard w/ his index finger & the blade came down. One piece was admitted of tweeking the lock bar for "drop shutty" action, the other no tweeking of lock bar, but failed just the same. Might be a weak detent situation. I've had a few different knives w/ this factor. My solution was to tweek the lock bar & give a bit more strength in the lockup.