The offset buffer retainer

[Slippers]

It's not super beat-up yet, but you can see where it's hit and there was wear on the pin as well. It's a battle kitty receiver so I don't think its really a quality issue there.

That's most likely your bolt carrier, not the buffer retaining pin. Notice how there's wear closer to the center where the retaining pin doesn't even contact?

It's really easy to verify that your buffer is not hitting the retaining pin, as explained above.

[Joelski]

Apparently the photo doesn't show it as well. I understand the difference.