Can someone link me to the mods that need to be done to use GHK mags in the AGM M4? I know the mag catch needs to be filed down, but is there anything else? I can only get it to work if I remove the upper receiver, push the mag in, then push the upper back down. Something's blocking it, I can't figure out what. GHK mags are slightly taller than AGM mags.
Edit: It was the upper receiver being slightly misaligned that's blocking the GHK mag. Since its really tight. A little filling on the corners of the mag made them fit.
AGM mags that are leaking: I took mine apart and made sure every