I saw in a video the idea of buffer 'chatter' where it bangs into the buffer retaining pin all the time. I looked at my primary AR and sure enough it's showing signs:
All the way around it's marked up from hitting the retaining pin. This lower has ~7k rounds through it.
Should I be concerned? What's the failure mode for that pin? At some point I open the rifle to clean it and the buffer spring assembly flies out?
Is there a fix besides replacing the lower?
All the way around it's marked up from hitting the retaining pin. This lower has ~7k rounds through it.
Should I be concerned? What's the failure mode for that pin? At some point I open the rifle to clean it and the buffer spring assembly flies out?
Is there a fix besides replacing the lower?