Newbie barrel threading question

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Chubu
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Newbie barrel threading question

Post by Chubu » Wed Jul 15, 2020 9:31 pm

Hello all - first post.
I bought a stag arms 8" ar pistol in blk recently. It seems the barrel threading is 1/2x28. It had an a2 and I replaced it with a 1/2x28 jp flash hider.
Now I read that this threading is rare on a blackout and that 1/2x28 is generally for 5.56 and that these devices might be dangerous with blackout pressure - especially supersonic.
Is this true or do I just not understand?
I have a kx3 on order - also in 5.56 1/2x28...
Last edited by Chubu on Wed Jul 15, 2020 10:28 pm, edited 1 time in total.

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20X11
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Re: Newbie barrel threading question

Post by 20X11 » Wed Jul 15, 2020 10:10 pm

As long as your muzzle device has a hole larger than .308 for the bullet to pass through, you are fine.

Chubu
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Re: Newbie barrel threading question

Post by Chubu » Wed Jul 15, 2020 10:40 pm

Thanks for the reply .

Is it as easy as getting a 1/2 to 5/8 adapter and buying a new appropriately sized muzzle device? Any downsides?

Why did stag use this threading anyway?

20X11
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Re: Newbie barrel threading question

Post by 20X11 » Thu Jul 16, 2020 9:34 am

Thread pattern isn't important, bore size is. You need a .308 muzzle device threaded to match your barrels thread pattern. I would not use an adapter.

Chubu
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Re: Newbie barrel threading question

Post by Chubu » Thu Jul 16, 2020 10:06 am

What is the issue with adapters?

20X11
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Re: Newbie barrel threading question

Post by 20X11 » Thu Jul 16, 2020 10:24 am

Mostly alignment...weight...changes to barrel harmonics...another set of threads to come loose...where would you like me to stop?

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