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AR15.COM
11/30/2008 7:28:54 PM EDT
should I get the 16" Barrel or 18" barrel?

Is there a significant loss in muzzle velocity and performance with the shorter barrel or is the more compact and slightly lighter carbine worth it?
11/30/2008 8:00:52 PM EDT
[#1]
From what I understand the 16" is designed a hair differently than the 18".  The front sight is different IIRC. No big deal really, just like 2" extra. I think you end up paying a bit more for the shorty also.