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AR15.COM
1/28/2025 10:19:54 PM EDT
I'm about to purchase this upper (FM9 7" upper)  and doing my due diligence I saw the muzzle thread.
Attached File


I just want to make sure before I make the purchase since I'm surpassing. Thanks
Shoot straight and tell the truth!
1/29/2025 1:11:07 PM EDT
[#1]
I called. Not only is it incorrect but not 1/2x28 it's 1/2x36!
Shoot straight and tell the truth!
2/3/2025 12:34:23 PM EDT
[#2]
Quote History
Originally Posted By TNRonin:
I called. Not only is it incorrect but not 1/2x28 it's 1/2x36!
View Quote


Apologies for the late response! We're glad you were able to get in touch with our FPS team to find the answer! We'll make the necessary change on the website Thank you!
Primary Arms Social Team.
www.Primaryarms.com
Contact me at: [email protected]

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