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Posted: 12/10/2013 4:34:45 PM EDT
I have this barrel:

Barrel Length: 16"
Mil-spec Barrel steel
5.56 Nato Chamber
1 in 7" twist
Chrome-lined bore
Mid-length Gas Port
.625" Diameter at gas block
Special Pencil barrel profile
Weight: 1.45lb

Here is a link to PSA's website. (http://palmettostatearmory.com/index.php/ar-15-05/upper-parts/barrels/psa-16-cmv-5-56-nato-mid-length-pencil-profile-chrome-lined-mp-premium-barrel.html)

My question is: Does anyone know the specs on the muzzle thread. This is my first time using this barrel and I want to know the specs in order to attach a muzzle device. I have contacted PSA three times via email and they do not respond. When I called, twice, the guy who knows is not there.

I want to install a Smith's enterprise Vortex muzzle device. Anyone knows which will be the correct thread size, pitch, etc?

Any assistance is appreciated.

Link Posted: 12/10/2013 4:48:17 PM EDT
I thought all 5.56 were threaded to 1/2 x 28.
Link Posted: 12/10/2013 4:59:53 PM EDT
[Last Edit: 12/10/2013 5:00:59 PM EDT by thepipe]
Originally Posted By rock71:
I thought all 5.56 were threaded to 1/2 x 28.
View Quote

That's what McGowen barrels say, but I'm not really sure if all other manufacturers stick to that standard. I know FN is the maker of my barrel.
Link Posted: 12/10/2013 5:00:49 PM EDT
1/2x28 tpi
Link Posted: 12/10/2013 5:01:44 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By cj3waker:
1/2x28 tpi
View Quote

awesome. Thanks!
Link Posted: 12/10/2013 6:31:22 PM EDT
I have that barrel in my upper with a standard A2 flash hider on it - so I can confirm it's 1/2"-28.

Link Posted: 12/10/2013 7:06:44 PM EDT
1/2 X 28
Link Posted: 12/13/2013 10:17:10 AM EDT
thank you much everyone. I have order my vortex comp.
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