For all you techno junkies - can anyone ID this Rail system? Rifle is an AMU built SDM circa Nov 2004 - pretty sure it's a DD rail - is it a "pre Lite" 12.0 ?
SDM Course 012.jpg
SDM Course 008.jpg
SDM Course 007.jpg
SDM Course 005.jpg
SDM Course 003.jpg
Thanks in advance.
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