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Posted: 12/14/2016 10:20:46 PM EDT
[#1]
I chose 1/2 X 28 because I was told it has the most compatible accessories.
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Posted: 12/14/2016 11:00:45 PM EDT
[#2]
Whatever the thread pitch is for 308 AR rifles. Don't know what it is at the moment. This way you could just use what is available for the 308.
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Posted: 12/14/2016 11:54:35 PM EDT
[#3]
I'd like to see pistol caliber standardized at 5/8 x 24
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Posted: 12/14/2016 11:55:18 PM EDT
[#4]
5/8 x24 for most of the .308 guns should be the 9mm choice also.... with a 1/2" barrel and a .355" hole only gives you a .073" wall thickness, minus the depth of the threads... the 36 tpi will have a shallower thread depth
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Posted: 12/15/2016 12:03:38 AM EDT
[#5]
1/2x28 for mine.
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Posted: 12/15/2016 12:11:02 AM EDT
[#6]
1/2-28. A pox on PSA!
It's not like I'm bitter about having to buy different pistons or anything. 
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Posted: 12/15/2016 7:23:59 AM EDT
[#7]
Quote HistoryQuoted:It's not like I'm bitter about having to buy different pistons or anything. |
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Posted: 12/15/2016 8:41:35 AM EDT
[#8]
1/2 X 28
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Posted: 12/15/2016 9:44:47 AM EDT
[#9]
First choice 5/8-24
Second 1/2-28 |
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Posted: 12/15/2016 10:47:50 AM EDT
[#10]
Quote HistoryQuoted:
I'd like to see pistol caliber standardized at 5/8 x 24 I'd like to see them standardized as well. |
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Posted: 12/15/2016 12:17:53 PM EDT
[#11]
It is a 9mm AR barrel right?
Right What caliber are 90% of the ARs that are out there? 223/5.56. What thread pitch do 223 ARs use? 1/2x28. I want all 9mm AR barrels to be 1/2x28. |
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Posted: 12/15/2016 11:41:15 PM EDT
[#12]
Quote HistoryQuoted:
You use pistons on your 9mm AR? Fixed barrel spacer? Of course. I use pistons on my 9mm AR, my pistols, and my other pistol caliber carbines. Seeing as how that's where the threaded portion is, it seems like it would be a tricky proposition to attach it to the firearm without using a piston. On pistols with floating barrels, I use the booster spring with the piston; on PCCs and fixed barrel pistols, I use the fixed barrel spacer with the piston (except for that one time). 
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Posted: 12/16/2016 6:11:27 PM EDT
[#13]
Quote HistoryQuoted:
.... with a 1/2" barrel and a .355" hole only gives you a .073" wall thickness, minus the depth of the threads... Actually that thought did occur to me, but i figured as long as i never fired it without a muzzle device or suppressor attached, that the threaded portion would be supported. |
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Posted: 12/16/2016 6:37:41 PM EDT
[#14]
I was always fine with 1/2X36, though I had an adapter for 1/2X36 to .578X28 so I could use my 45 silencer. When cutting the new barrel down, I went with 1/2 X 28 since I have a 9mm silencer in that thread.
Otherwise I don't really care, though it'd be nice if there were a wider selection of muzzle brakes for the 9mm in the different threads. |
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Posted: 12/17/2016 11:52:46 PM EDT
[#15]
My 5.5" has 5/8x24 threads.
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Posted: 12/18/2016 3:18:08 AM EDT
[#16]
Other.....All my 9mm barrels are 3-lug.
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Posted: 12/18/2016 3:29:50 AM EDT
[#17]
There's really no reason for a 9mm barrel to be a thick enough profile to be able to use a 5/8" thread.
1/2x36 was the original spec and seems like a good option. |
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Posted: 12/18/2016 12:11:16 PM EDT
[#18]
Quote HistoryQuoted:
Other.....All my 9mm barrels are 3-lug. Same here |
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Posted: 12/19/2016 10:51:58 AM EDT
[#19]
We sell far more 1/2x28 threaded 9mm barrels than any other thread pattern.
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Posted: 12/19/2016 2:25:26 PM EDT
[#20]
From what I've seen around the market it seems as though a lot of the newer 5.56 muzzle devices are being drilled to allow 9mm to pass through. What are the primary arguments against 1/2x28 other than putting a 9mm through a muzzle device that is only meant for 5.56.
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Posted: 12/19/2016 2:50:35 PM EDT
[#21]
Same as 9mm pistols.
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