Hard to believe that some troops are actually lubing ammo (if this is indeed accurate):

"Soldiers, word from the field is that some of you are reporting M16 and M4 bolt damage. The bolt locking lugs are cracking, breaking off, causing weapon stoppages, and creating a risk of injury and weapon damage.

There are warnings in every weapon technical manual (TM) telling you to keep your ammo clean and dry. Don’t be fooled by the incorrect field-expedient guidance that says a little lube in your chamber and on your ammo helps the weapon perform better!"


https://www.psmagazine.army.mil/News...clean-and-dry/