KJW KP-01 Part

[Viper717]

Hi,
Does anyone know where i can get replacement part #73 (BB Lip)?
Also is it very difficult to take apart the mag to replace this piece?
This is going to be my first repair ever.

Thanks

++Edit++
Sorry i should be clear, is it ok to purchase from a site like;
http://shop.ehobbyasia.com/kj-works-...art-no-73.html

Would the part be up to standard?

Or is it available in metal or something else?