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Posted: 11/5/2018 10:14:10 PM EDT
[#1]
The more I shoot 300blk the more I like it, especially in SBR/Pistol form.
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Posted: 11/5/2018 10:22:24 PM EDT
[#2]
What barrel length?
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Posted: 11/5/2018 10:35:11 PM EDT
[#3]
Quote HistoryQuoted:
What barrel length? |
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Posted: 11/5/2018 11:47:34 PM EDT
[#4]
I have a 9 inch rail though... that's what I'm going to build the new gun around.
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Posted: 11/6/2018 12:35:20 AM EDT
[#5]
9.5 300 blkout will be just fine
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Posted: 11/7/2018 12:54:14 PM EDT
[#6]
If I'm not mistaken, most usually go with a 10.5" 300 BLK barrel based on comparison of velocity : short barrel ratio.
You could build a 5.56/223 AR Pistol using a 7.5" barrel with a muzzle device under the 9" rail like shown below. That pic is not a great example, but it shows the muzzle device under the handguard. 
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Posted: 11/7/2018 2:15:14 PM EDT
[#7]
300 blk is awesome suppressed.
I reload and cast though so not as expensive for me to shoot. |
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Posted: 11/9/2018 4:33:51 PM EDT
[#8]
I have a 10.3 noveske barreled 300 blackout and run it suppressed. I love it, but I'm collecting parts now for the next build and am leaning towards a 7.5-8" 300 blackout. I like the idea of some of the suppressor being recessed under the rail.
In full disclosure though I already have a lone wolf glock ar9, an 11" 556, and a 12" 6.5 grendel, so that's why I came back to the blackout for this build. As was mentioned above, it is bad ass suppressed! |
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Posted: 11/10/2018 1:36:14 AM EDT
[#9]
I feel like 9.5" is the ideal barrel length for .300 BO. I would have no problem going an inch shorter or longer, but wouldn't want to deviate any more than that.
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Posted: 11/10/2018 9:43:50 AM EDT
[#10]
Quote HistoryQuoted:
If I'm not mistaken, most usually go with a 10.5" 300 BLK barrel based on comparison of velocity : short barrel ratio. You could build a 5.56/223 AR Pistol using a 7.5" barrel with a muzzle device under the 9" rail like shown below. That pic is not a great example, but it shows the muzzle device under the handguard. https://s3.amazonaws.com/mgm-content/sites/armslist/uploads/posts/2013/03/16/1271025_01_ar15_7_5_pistol_complete_223_5_640.jpg |
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Posted: 11/10/2018 11:41:10 PM EDT
[#11]
 Attached File10" Blackout. I think the handguard is 9.25" ? (MI gen2...or is it 3?) Even before the can got home, shooting subs at steel, is just FUN. |
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