Thanks! Amazon had a hypodermic needle looking unit of it for a reasonable price.
Not sure what everyone else does but I wipe the bolt and bolt raceway (?) down with brake cleaner, soft brush and rag to get the mix of dust, grease, carbon, and what not out before re-lubing. That's usually every 100 rounds or so.
In Australia we have all kinds of issues depending on the season (like most places), it gets very dusty in our area during warmer months, the fine grit that clogs triggers and messes with magazines followed by mud in winter and everything else in between. I generally try to keep action fairly dry by avoiding oil and grease, opting more for dry lubricants to avoid gumming up sensitive areas and pulling crap into the action.
Bolt guns get the same treatment:
Wipe down the entire action inside
Pull the barrel and top NV cover at times to get into the barrel locking threads from the front end also as required
Clean the chamber area of fine debris
Clean out the bolt stop raceway on both the bolt body and action insides
Bolt face, under extractor, ejector
Use tuf-glide on bolt stop raceway
Lube barrel prior to re-inseting
Rub tuf-glide onto bolt lugs, bolt body contact points, camming area of bolt handle, bolt stop, action area behind trigger sear etc.
Run bolt a handful of times to get lube into all the relevant areas
Then simply wipe dust and crap off as required down the track, before cleaning and doing it all over again periodically.