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AR15.COM
AR Sponsor
2/13/2006 7:37:28 AM EDT
What are the numers along the RIS rails for?
2/13/2006 7:49:27 AM EDT
[#1]
The same reason they are there on the flattop.  To ensure accessories are returned to the correct spot (very important with devices that need to be zeroed - like IR Lasers).
AR Sponsor