WG 1911 Repair Parts

[Karasumori]

I have a WG (Wingun?) 1911 that I had lent to my friend a few months back and he returns it to me all broken and stuff .
So now I am gonna try to fix it since this pisto has some sentimental value to me. 

What is missing is what appears to be the back plate of the slide, safety, and the spring thats suppose to make the slide move forward.

Does anyone have any idea where I can get these parts and in the safety's case how to install it?

Links Help

[ThatGuy]

http://www.amazon.com/gp/aw/d/B003AKX0O0/ref=redir_mdp_mobile?ei=3t4IUP-xCcrg2AXW7IzuBw&sa=X&ved=0CFkQgwgwAg

[Karasumori]

http://www.amazon.com/gp/aw/d/B003AKX0O0/ref=redir_mdp_mobile?ei=3t4IUP-xCcrg2AXW7IzuBw&sa=X&ved=0CFkQgwgwAg

Thanks for the link I think id buy that pistol and use it to repair the one I have right now. and worse case scenario I cant fix my gun I can just use that one instead.