Thread: Gas Port Diameter and SubSonic Loads. . .
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Old 12-04-2005, 02:35 AM
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sharpshooter33 sharpshooter33 is offline
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Join Date: Jan 2005
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Aa1680
I've been using AA1680 in my 16"AR15 been real consistent on function with 220gr SMK's even with real slow velocities 900's
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