M16 CYMA solid stock butt plate removal

[alexgibs98]

Hi all,

 

I'm having a lot of trouble with removing the buttplate entirely of my new stock to put in the battery. It's the CYMA M4/15/16 Solid Full Stock from Patrol Base.

Any advice?

 

Thanks in advance 

 

EDIT:

After about an hour of searching I found on Taiwan Gun how to remove it. If this picture was on Patrol Base I'd have not bought it as the compartment is too f*cking small for my battery. This sort of thing has happened before from them. f*ck Patrol base.