Hello! It’s my understanding that the M1A/M14 requires grease on some of it’s components in order to function properly and reduce excessive wear. In my experience, though, grease seems to attract small particulates and fine sand much more than a lightly oiled or even dry firearm would, specifically in a desert environment. Were there any exceptions to using grease for M14’s fielded in Iraq and Afghanistan? And did any of these exceptions prove to be good enough, or were the rifles’ service lives significantly shortened?