KJW KC-02 External Upgrades

Hey guys,

Now i just have a few quick questions regarding what external upgrades can be attached to the KJW KC-02. I have read on other reviews and threads saying that "most" aftermarket parts will go on it but i know that it will be just my luck that i buy the parts that don't work. If you know of any specific parts/companies that work with this gun i would greatly appreciate it if you could let me know

The parts that i have found and would like to attach to my gun if possible are

Crane Stock
http://www.evike.com/product_info.php?cPath=25_113_541&products_id=32360

Pistol Grip
http://www.evike.com/product_info.php?manufacturers_id=&products_id=27113

If you know if these do/don't work please let me know