Does anyone know if this is a metal clone of the Marui and if the mags are interchangeable?
The mags are not interchangeable.
And it's not very good, to be honest. I'm holding out for the TM clone to become more readily available.
Anyone know if it's in the UK yet (at work, can't search for 'weapons').
Disagree with Kav , the one I bought was A1 . I use it on propane, the mags don't leak and it has a nice kick . It's as useless as 99% of most airsoft pistols IMHO in that an AEG will kill you dead, but can't complain for £56 .
Don't get me wrong, it always worked reasonably well for me, to the extent that I could use it in weather conditions where I've seen other gas guns fail; my problem with it was more with quality of build and finish. You can't deny it looks awful, and it's made mostly of a cross between tin alloy and paper mache...
We on about the same gun ? 
, I'm talking about the full metal grey painted thing . The paint finish is not as good as WA guns , but thought it was acceptable for the price . Functionally it works ok .
I'm aware they've also brought out a plastic cheaper version . TBH with the full metal so cheap not sure why you'd bother with it .
The metal one I have shoots fine on powerful gas (after it was cleaned properly), but because of the way the paint flakes off if you even look at it, it just doesn't look as nice as the plastic versions.
Also the shiny metal barrel is a put off...
But it does shoot well... (in the summer)
I am talking about the metal version - the metal used in construction is very poor, and that's just in the slide/receiver. I can only imagine what the working parts are like, particularly after my sear snapped off in only it's third skirmish. And the barrel... 