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AR15.COM
2/15/2009 12:32:29 PM EDT

Ok guru's, what does the SS on the trigger guard stand for?
I hadn't even noticed it untill a couple minutes ago.
2/16/2009 6:03:41 AM EDT
[#1]
I would guess stainless steel, but not 100% positive. My stainless champion has the same mark.
2/16/2009 5:02:21 PM EDT
[#2]
Yes, it's "stainless steel". This is to allow quicker ID of a frame versus say a brushed aluminum frame for those whom may not know.

Oh, yes, the "NM" on the S/N does NOT mean it's a "national match" frame!