Composite of the metal?

[WestAustralian]

Hi, sorry to hit you guys with a question that probably everyone is gonna roll their eyes over but I recently picked up a Z-grip in a private sale down here in Australia which if you know our import laws is quite tricky to do..

Now my question is what exactly is the type of metal that it is made out of? Is it some type of alloy? And can it be polished up to a chrome like effect?

Also if you're feeling kind I wanted to know what metal the original body rail on my classic mag is made out of (the black anodized rail).....Cheers for the patience :)

[Thordic]

They are both aluminum, to my knowledge.

Anything annodized is aluminum, for further reference :)