More results. Put another 200rds thru it today. We had 1 FTF with nose down. Didn't have any live round stovepipes or ejected live rounds. Noticed early on today that one of the mags was a problem. Follower would stick about 1/4" from the end of travel. This left the last round loose. This is the mag that the FTF occurred with today. We shot about 1/3 of the rounds thru the bad mag. I wanted to see if the ejection of live rounds would occur only on this mag and saw it happen on neither. I was surprised that the sticky follower didn't cause more than 1 failure. I disassembled the mag when home thinking that something would show up. The follower moved nicely without the spring. I didn't find any burrs or debris - nothing. I reassembled and follower doesn't stick at all. Not sure how to explain it.