Same here
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I'm not one to re-invent the wheel. I figure Iraqgunz research was more than enough. He mentioned it in another thread but I'm still not clear on which pieces get it.
Barrel nut threads - C5-A
Barrel/receiver smooth fit - AeroShell ??
Castle Nut - sounds like C5-A here too
@Iraqgunz, are you using it on the castle nut too? Also on the barrel, not the threads but the part that plugs into the receiver, should I just use AeroShell 33 there? So it would be grease on the smooth surfaces and C5-A on threaded parts? Or C5-A all the way?