AR10 Chamber/Barrel bore scope opinions

[Mumbles76]

Hello all, got my first borescope and used it on a (new to me) AR10 and was told the rifle had less than 100 rounds on it. I know, everyone says that.

But i noticed what appears to be some voids, almost like some recesses in the chamber, seemingly where two metals meet. But i'm a complete novice on this, can i ask for some opinions, particularly starting around the :30 second mark

Does this chamber and barrel look consistent with a rifle with a sub-100 round count?

I'd love to hear people's opinions.

 

[oldrifleman]

That actually looks like a carbon ring, the barrel is not welded

 

[Mumbles76]

That actually looks like a carbon ring, the barrel is not welded

Do you think it looks consistent with sub-100 round barrel? FWIW - this is a top-tier rifle. But i just don't have any experience looking at it through a borescope, so i could be looking at the crappiest barrel/chamber in existence and not know the difference.

 

[oldrifleman]

It will depend on the barrel throat and ammo dimensions. 100 rounds seems low but it can happen. That line appears to be the very start of the ring (early on in the development).

 

[6.5SH]

The condition of the gas port may tell you more, but it looks pretty low round count to me.