https://youtu.be/JnWqNSD9eEs
https://youtu.be/FhhQ9sEac6o
A lot of the AR 15's being offered by companies like PSA are leaving the factory with any combination of the following issues:
- No headspace checks.
- Rifle upper combined with M4 feed ramp cut barrel extensions.
- Undersized chamber.
- Roughly cut chamber and or barrel extension.
- Massive gas port dimensions.
- Under buffered, (using a standard CAR15 instead of an H-2 or H- 3)
- Improperly staked Gas key.
- Unstaked castle nut.
Also pretty much any Armorer or Gunsmith worth their salt will tell you to stay far and wide from NiB coated anything that needs to have precise metal to metal contact. NP3 might be a better alternative, but there is a good reason the .mil doesn't use Nib in their Bolts or Bolt Carriers.
Good luck, hopefully PSA fixes the issue for you, but don't be suprised if you have to take your replacement AR in to a competent local smith and have them fix it.
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Originally Posted by MOLON LABE
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