[Unsullied_Spy]

Stock arms are really weak, they will break if you give them a stern talking to. The RPM ones are a ton tougher (even I haven't broken one :p) but you need to replace the turnbuckles that come in them, the RPM ones are really weak. Lunsford makes some titanium ones for it that make those arms virtually unbreakable. You'll also need RPM's adapter kit to make them fit the Muggy or LST.