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Old 11-23-2007, 03:18 PM   #1
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Quick barrel length question

For complete 16" uppers like https://www.lewismachine.net/product...ef125b273d5106 or http://www.rockriverarms.com/item-de...TOKEN=14448529 ,
Is it 16" and then the flash hider making it actually longer than 16" or is it a combined total of 16" WITH the flash hider installed?

Thanks
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Old 11-23-2007, 03:21 PM   #2
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I believe it's the combination of the barrel and the flash hider has to be greater than 16".
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Old 11-23-2007, 04:10 PM   #3
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The barrel length is 16", then the flash hider adds to it.

Legal length is 16",( without paying the SBR tax) if you go with a 14.5" + and a pinned and welded extended length flash hider it becomes part of the "barrel".
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Old 11-23-2007, 04:13 PM   #4
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Thanks guys. So in reality its 16" PLUS 1-2".. So if I buy a 16" with a FH added, it's not going to be pinned in since it' still legal with the FH off.. right?
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Old 11-23-2007, 04:39 PM   #5
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Thanks guys. So in reality its 16" PLUS 1-2".. So if I buy a 16" with a FH added, it's not going to be pinned in since it' still legal with the FH off.. right?
correct
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Old 11-23-2007, 04:43 PM   #6
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Awesome. It's been awhile since I've messed with AR's. Almost 8 years to be exact.
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Old 11-23-2007, 08:52 PM   #7
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Hey guys, one more question..

If I were to purchase a 16" barrel to be cut down to about 13", what would be the ideal twist rate? 1/7 or 1/9?
I plan on having a KX3 welded or pinned on to bump it back to 16".
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Old 11-23-2007, 11:27 PM   #8
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Hey guys, one more question..

If I were to purchase a 16" barrel to be cut down to about 13", what would be the ideal twist rate? 1/7 or 1/9?
I plan on having a KX3 welded or pinned on to bump it back to 16".
Depends on what type of ammo you are going to run, lighter bullets do better with 1/9 and the heavier with 1/7.
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Old 11-24-2007, 06:00 AM   #9
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I'll probably run 55 or 62 99% of the time.
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Old 11-24-2007, 06:42 AM   #10
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I'll probably run 55 or 62 99% of the time.

1/9
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