Thanks W.K., I've well documented that over numerous posts. You are correct though, I just didn't feel the need to outline EVERYTHING regarding the M11 in this thread
. M11 mag rubber soaks up oil, swells and rips. Even the hop up sleeve/breech does too. Just a matter of putting oil in the right places and avoiding others.
Want odd though? I've only found the rubber used in M11 parts to have this problem, neither of my KSC G19s or my 4 mags has even come close to this, nor any of the G18's my teammates have (at least 5 of them have one and numerous mags) or the KSC Mk23 Socom or the USP. Seems only the M11s that have this problem, of which there are 3 on our team. Odd isn't it?