Not sure if this was already discussed but I am seeing a lot of clone/fake 535 Bugout with the blue handle.
Right now on fleabay, I spotted 3 fakes within the first 8 blue handle versions that are listed. The easiest way to tell is looking at the shape of the bevel grind and location of laser mark in relation to the thumb stud. Fortunately the bevel grind is pretty far off in the thumb stud area so they are easy to spot if you know what to look for. Other finer differences are the axis lock spring shape, the blade pivot screw, quality of the bevel grind, texture of the blade in the non bevel area, etc.
This is the first time I have seen so many fakes of a Benchmade floating around.
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