I don't know about using space lube, but.... I do drown carbines (yes, I'm in dry, windy, sandy conditions) in oil - motor oil, Ballistol, whatever oil I can lay my hands on.
This may explain why my carbine doesn't malfunction, even though it is covered in gritty dust after being carried all day beside me in a vehicle.
I don't know what to say, but running an AR dry is really a bad idea, no matter what space age coating you have on it.
Oh, huh... this is pretty interesting... Oh, never mind Vickers doesn't know what he is talking about, I'm sure...
https://www.m4carbine.net/showthread.php?t=111767