Use TWC25 or the equivalent on the sliding parts
Use Mobil1 on the lubed parts (much better heat tolerance than oil which burns).
And how much sand do we see in our day in day out use?
Attracting goo is a non issue for all practical purposes we generally don't roll in the sand and dirt (the we have to train till we die crowd excepted)
And in combat they run them wet to the fight is over. Keeps it flushed and they keep working. Clean the crud when done and go on.
Best system, no but they have found a way to make it work in the worst conditions possible.
And I have yet to have issues with steel cases. Gun specif, some run them and some don't
If yours don't, then don't use it but don't make a blanket statement.
Gun specific and apply as or when proven.
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