Finally found it again...
http://www.ar15.com/forums/topic.html?b=3&f=118&t=499497&sr=0
"Those are my pics. I took those around the 15K mark. Broke a bolt lug around 16K, second lug broke after another mag or two, then I terminated my experiment. Interestingly enough, the bolt release broke in that 15-16 range as well."
"I lubed with miltec every 700-1000 roundsish. Although, i probably did add more whenever it was a new day at teh range.
Buffer tube broke during the SPOT testing, which was after the torture test was over. Didn't replace any parts during the test, although I had to use charging handle to release bolt towards the end.
Keep in mind this was back in '05, when wolf 223 was $93 delivered."
"- parts gun using M1S bolt carrier group
- wolf steel cased ammunition
- militec for lube"