With BK's DSSD it would be impossible to tell with a glance, your friend would most likely have to compare the two side by side. Personally, the only imperfections i think BK's DSSD has is the bezel insert and the clasp, but other than that its pretty much 1:1, but that doesn't mean you can't mod it with trevor's insert and vacclume that beast and change the bracelet with a Nato strap into a full blown semi franken DSSD. BK's DSSD is the best 1:1 rep you'll get out the box hands down. I'll post some pic's later so you can compare my BK with a GEN. But this is my 2 cent and I'm no DSSD expert, so fellow platinum members please feel free to criticize