"First off, these are nicely made for the most part. Engravings are clean and crisp, it's a standard high end G&P receiver.
Now, it should be noted:
This receiver comes with exactly, and only, what you see in the pictures on here. No spring or pin for the forward assist.
Actually, scratch that, I'm pretty sure mine didn't come with the little black cap that goes on the right side of the receiver to cover the fire selector hole either.
Additionally: This is a TAPER receiver, meaning it accepts both G&P Taber outer barrels, and regular barrels (or at least the one I just fit to it to test). Apparently taper barrels are more stable, but who knows, mine is still in the mail, so I couldn't tell ya. From what I understand, this and a few other G&P receivers also use GBB/RS style dust covers, and are not designed for the dust cover to actually latch shut (sadness). AEG dust covers are too tall to fit properly.
Handguard/rail/barrel nut threading is standard AEG spec, so none of that weird older G&P frontend stuff, any regular rail system should work (I just tried three different ones - all worked flawlessly).
As for construction, it's give it a 8/10, I had some fairly thick flashing from the mold remaining in my trigger guard, and the holes are so exactly sized that to fit a fire selector, I actually had to scrape out the paint in them for it to fit. Still not sure if that's a bad thing or not though.
The receiver comes nicely packaged in the box with no visual blemishes. The paint, as with most things airsoft, is mostly held on by hope and prayer, but I kinda want to Cerakote my whole system anyway, so... It does its job for now, and at least any wear until then is authentic.
My one gripe I have with the design is that the trigger guard rises too much in the back - on a standard receiver, the space for the pistol grip to merge to is 1.2" long, while on this one it's only 1.12".
I know, it sounds ridiculous to gripe about that, but it leaves a rather noticeable gap between the lip of a pistol grip and the bottom of the trigger guard, almost 1/8" in my case.
It doesn't effect functionality in the slightest, but it looks stupid, which is sad, especially when on a receiver where everything else appears so well though out. I'll probably end up lasing a chunk of plastic to shape to fill that gap just so it looks better.
And yes, these are all individually numbered. My serial is lower than the one Evike took photos of for this page, oddly enough... heh.
"The design is good and looks nice feels nice and heavy/sturdy upping inspection.
Main issue I had was shortly after installation the upper receiver pin hole cracked and broke. Further inspection concluded that the receiver is cast then machined. The metal is extremely porous and making it weak in areas like that.