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Old November 12, 2012, 07:35 PM   #27
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Join Date: December 13, 2005
Posts: 2,613
For the 5.56 round, a 20 inch barrel seems more appropriate, with a good compromise of velocity, moderate noise and sufficient barrel stiffness for length. However, the market seems very focused on 16 inch barrels with many options and lots of competition.
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