Crowbar - have a look at the great pics and info posted on the Upgraded Compensator thread
Upgraded Compensator thread If you have this type of compensator (its the new alloy one, but not the newest - the newest apparently doesn't have a grease nipple
) the grease nipple is accessible by the circular hole in the bottom of the housing.
Mine has this type, and when it starts to rattle I will need to somehow attach a grease gun and pump in some Morris K323 premier blue grease. Can't say I'm looking forward to attempting that maintenance task the first time it needs it.
