I personally like a 20" tube on an AR based platform. I have 24's,but find it unhandy. The 20's make good speeds,are much quicker to use and as you mention,are MUCH less abusive to the ears than the 16" pipes.
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<br>I'd better scoot,there is only 9-1/2hrs of shooting light left(grin)...............


Brad says: "Can't fault Rick for his pity letting you back on the fire... but pity it was and remains. Nothing more, nothing less. A sad little man in a sad little dream."