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Old 02-22-2009, 04:59 PM   #1
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Is a 20" barrel considered a rifle or carbine? Gas tubes are listed not in length but carbine or rifle.

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Old 02-22-2009, 09:04 PM   #2
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20" is a rifle 16" is a carbine/M-4 length
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Old 02-23-2009, 02:00 PM   #3
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Generally a 20" is a rifle and anything shorter (16 or 14.5") is a carbine. Anything longer than 20" is also a rifle and uses the same gas tube.
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