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Posted: 2/13/2020 2:54:50 AM EDT
I recently bought a slick side billet upper receiver for a PCC build. After I got it, I noticed its threading for the barrel nut does not go all way to the Picatinny side. See attached picture. Could this cause any problem for securing the barrel nut? I looked at a spare traditional AR-15 upper receiver from Aero that I have, it seems its threading goes a few more turns toward the Picatinny side.
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Posted: 2/13/2020 3:52:56 AM EDT
[#1]
Quoted:
I recently bought a slick side billet upper receiver for a PCC build. After I got it, I noticed its threading for the barrel nut does not go all way to the Picatinny side. See attached picture. Could this cause any problem for securing the barrel nut? I looked at a spare traditional AR-15 upper receiver from Aero that I have, it seems its threading goes a few more turns toward the Picatinny side. https://i.imgur.com/6LxRyFml.jpg?1 |
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Posted: 2/13/2020 11:39:15 AM EDT
[#2]
Common trait. Giterdun
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Posted: 2/13/2020 4:58:16 PM EDT
[#3]
Thank you guys for your reassurance. This is my second AR-15 build, so I don’t have much experience, yet.
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Posted: 2/13/2020 7:57:47 PM EDT
[#4]
Some have a longer relief cut for the threads than others. I don't know why they have that when they are CNC machined.
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Posted: 2/14/2020 12:29:15 AM EDT
[#5]
Quoted:
I recently bought a slick side billet upper receiver for a PCC build. After I got it, I noticed its threading for the barrel nut does not go all way to the Picatinny side. See attached picture. Could this cause any problem for securing the barrel nut? I looked at a spare traditional AR-15 upper receiver from Aero that I have, it seems its threading goes a few more turns toward the Picatinny side. https://i.imgur.com/6LxRyFml.jpg?1 It's not supposed to . . . 
Although yours looks a bit more than .08". |
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