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Joined: Dec 2007
Posts: 25,107
Campfire Ranger
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Campfire Ranger
Joined: Dec 2007
Posts: 25,107
11.5” or ? What’s the “sweet spot” for a smooth running pistol sized AR?

Looking at an upper for a compactish truck gun.

https://www.aeroprecisionusa.com/m4...e-upper-receiver-w-atlas-s-one-handguard


“Life is life and fun is fun, but it's all so quiet when the goldfish die.”
GB1

Joined: Nov 2003
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Campfire Ranger
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Campfire Ranger
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Joined: Nov 2011
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Campfire 'Bwana
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Campfire 'Bwana
A
Joined: Nov 2011
Posts: 30,998
Yes, 11.5 is generally considered the sweet spot.


You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

You cannot over estimate the unimportance of nearly everything. John Maxwell
Joined: Oct 2008
Posts: 18,170
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Campfire Ranger
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R
Joined: Oct 2008
Posts: 18,170
7.5" 300blk


TRUMP- GABBARD 2024
Joined: Mar 2007
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Campfire Regular
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Joined: Mar 2007
Posts: 1,954
In 5.56, I have a DD Mark 18 10.3”.It has been reliable suppressed unsuppressed. That’s the shortest I’ve ever experienced a 5.56. 300 blackout I have a Sig rattler 5.5 inch barrel with roughly 700 rounds down the tube suppressedSo far so good. I have only run Gemtech 180 grain subsonic.

IC B2


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