Grey LMT Buffer Tubes

The receiver extensions are anodized and then coated with a dry-film lubricant similer to "EM Lubri-Bond, Air Dry Solid Film Lubricant A Mil-L 23398B Type II" which is used to spray the inside of milspec receivers. It would appear that LMT is chosing to do that to their receiver extensions to allow the SOPMOD stock to slide a little easier as they are a snug fit.

The Dry Film is grey in color.

Boltgun
 
Boltgun is correct. Some people (I guess it matters to some) remove the dry film lubricant because it bugs them. The receiver extensions are black underneath just like all the other ones on the market... It is definately not an anodizing issue...

hsld.
 
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