GHK - WA magazine compatibility

[Mad-Al]

Hi all, sorry gbb noob here.

 

I recently treated myself to a GE GBBR which i am aware is based on the WA system but im struggling to find G&P G mags for it, however i have been able to find GHK G5 gmags.

I know i would need to file either the mags or magwells to make them fit but other than that would those magazines work with the GE?

If not how hard would it be to make them fit?

 

I am aware both are based off the WA design but i dont know how well they will work with one system using the 45 degree hammer and the other a 90.

 

Thanks in advance!