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AR15.COM
2/13/2006 2:48:42 PM EDT
is this a RRA barrel code?  i want to think ive seen a list of RRA codes and they were like this.  anyone have the list or know what this code means?

thanks
Kevin
2/13/2006 7:04:53 PM EDT
[#1]
What would be cool is a "sticky" post with the barrel codes.

Steve, could you do that? Or at least tell me what a "212" code is?

Thanks!
2/14/2006 5:04:02 AM EDT
[#2]
The N9A is in our old coding...N= NATO chamber/9= 1:9 twist/ A= alloy (chrome-moly versus c which would be a C, for chrome).
212 is the current system, and is short for barrel number AR0212, which is a mid-length chrome lined barrrel.
Steve/RRA