At reassembly after cleaning:
1. drop on the spring under the extractor
2. drop or two on the gas rings
3. drop or two on the large diameter part of the bolt in front of the gas rings
4. drops, several, down inside the carrier where the bolt fits into
5. drops, two or three, where the cam pin fits into the bolt/carrier
6. drop or two on the firing pin
7. drop in the hole for the firing pin retaining pin before I insert the pin
8. drop or two on the carrier rails where they contact the receiver
9. drop or two on the bolt lugs before inserting the bolt into the receiver
Not to mention the oil I put on the charging handle channel and inside the upper receiver before I insert the bolt.
Yeah, oil runs out sometimes. No, the rifles run fine. I won't be wearing any of mine out in this lifetime.
Confessions of a compulsive over oiler.