Safety stopped working (trigger still pulls when in "safe"). Pulled the gun apart and noticed this little collar appears to be broken:
As someone who knows jack shit about V2 mechboxes, WTF is this part and what do I need to do to fix/replace it, and should I be looking for other broken parts?
(I can open the mechbox and more or less know my way around the components.. just not familiar with V2 or MP5s)