I bought one (HK-450) as well, had it for a few weeks now. It obviously was made from a real Trex SA, I can see tool marks on the tailboom block where the Align logo was milled off before they used the part to make the mold.
The stock fiberglass blades that come with it are crap, one of them has a very visable warp in it, it doesn't and never will track straight.
The stock socket head screws are also crap, I had heads break off just trying to screw them in all the way, never mind tighten them down.
The plastic used for molding parts seems to be on the brittle side, more so than the stock Align pieces.
The good news is that virtually any Align Trex 450 part is bolt on. My very first heli was an SA, I still have the badly bent original frame from it, and other than the lack of a serial number, the clone frame is exactly the sale. I traded my original SA for my XCell Fury and soon decided I wanted another 450, so I bought the clone. Still had a fairly large stock of Align parts and upgrade bits that never got used on the first Trex, so I swapped them into the clone. I can't tell the difference flying the clone vs the real Trex SA, best $35 I've spent for a small heli.