I've ordered twice, 2 years ago, my vision king 1.25x5 shotdot with mini red dot and rail mount. The included mini red dot wouldn't stay on, even with aeg vibrations, it would shut itself off every time the piston hit the cylinder head. Doubtful it could keep zero even if it did stay on. They refunded me a portion of the package deal (the price of the red dot) when I showed them a video of me tapping the side of the gun and it shutting off. The scope itself is pretty good, eye relief is not great, the UTG leaper's clone is probably better in that regard for only a bit more money.
I ordered last year, standard acm type service. They actually shipped us the wrong brand of drum mag but it's all the same. Instead of a remote line a&k c-mag, I think they sent us a drum mounted switch on c-mag. Not sure what brand it was. Prices are reasonably good and shipping is free so if you need acm... you get acm. lol.
I'd order again if I need that level of stuff.
Their packaging is not so great, it consists of whatever box or packaging your stuff comes in, put in an unpadded envelope and tied with a string. Don't order anything delicate.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.