[Boyso]

I did on the standard M4 mags have leaks, but really, on the v2 mags, no problem. Haven't opened them up either.

I found that while the M4 I had before didn't really need much lubrification, the M14 needs more on the action. But the only place I put oil on the internals is on the nozzle oring, and maybe a quick spray on your trigger components to waterproof them, and that's about it.

Over-greasing just makes a mess, and it really gets everywhere, especially where it shouldn't be.