Well, at least on mine, where the LED module sits doesn't allow the blade to be held in with much strength by the glass eye screw - I suppose I could improve that by using the hex screw above it instead
My main concern is with the buttons and wiring. I already had an issue where the metal from the red button housing was shorting the switch for activation. I've fixed it, but at the end of the day, I have no interest in dueling with it anyway. I'll always have fears that something will get knocked loose, or the crystal will break off and smash into the speaker, or something along those lines.
For me, it's a very good (not perfect) replica that has some neat bonus features, but is mostly for sitting on the shelf and looking nice.