The swashplate housing is 17700 hours, which basically for all intents and purposes, makes it an on condition part. The swashplate bearings are 1200 hours, unless you add a grease fitting to the housings, then the bearings become on condition. The mechanics I have talked with, tell me they don't see much of an increase in usable times by doing this, for most private owners they only see a 100 to 200 hours increase.
The MR transmission is a 1200 hour item for overhaul. The overhauls MUST be done by Enstrom. Overhaul kits used to be available, however, there have been issues with the quality of these overhauls and Enstrom has pulled the kits.