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Old February 12, 2018, 18:53   #1
BIG50
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Gas tube vent holes up or down

Simple question I usualy turn them up. How any of you turn them down and why?
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Old February 12, 2018, 18:56   #2
4markk
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IIRC:
Inch = Up at 10 & 2
Metric = Down at 8 & 4

It is to match up with the vents on the hadguards.
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Old February 12, 2018, 18:57   #3
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I turn the the direction that gives me the tightest fit with the gas block. If I had a rifle with wood HGs that were expensive I would consider making sure the were down to preserve the HGs. It seems though the most tend to line up down. But I only have FALs.
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Last edited by meltblown; February 12, 2018 at 19:03.
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Old February 12, 2018, 21:20   #4
enbloc8
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Quote:
Originally Posted by 4markk View Post
IIRC:
Inch = Up at 10 & 2
Metric = Down at 8 & 4

It is to match up with the vents on the hadguards.
Inch gas tubes = sideways at 3 and 9. You should be able to see them through the vent holes on the handguards.
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Old February 13, 2018, 11:34   #5
lew
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Quote:
Originally Posted by enbloc8 View Post
Inch gas tubes = sideways at 3 and 9. You should be able to see them through the vent holes on the handguards.
Yup.

Metric, down, as stated above. The gas tube should fit with some wiggle, and there's no sense in gas cutting the interior of the handguards.
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