AR buffer help

[red_zr24x4]

In the last 2 years I've had the rubber/plastic tit in my buffer break off right at the roll pin, anyone have any ideas on what to check?
I really don't want to have to replace the buffer every year.

 

[red_zr24x4]

Just wanted to add-
Last year when this happened a member on here stated they made some of these in college and offered to send me a few, if you see this PM me I didn't save the IM's we exchanged.

 

[mammynun]

Is it possible that your AR is over-gassed? I can't think of anything else that might cause a buffer to fail unless your got two poorly manufactured buffers in a row.

And to be clear, the plastic part is breaking where the pin goes through?

 

[red_zr24x4]

mammynun, I don't think it's overgased, everything seem to be working correctly, no excessive wear.
The plastic tit is breaking at the back of the buffer body/ at the roll pin that holds it in

 

[TJ Kackowski]

If this issue persists, why don't you just buy a few extra buffer bumpers? A quick Google search shows that they're relatively inexpensive (depending upon supplier) and readily available.

Here's one source ... Buffer Tubes & Parts - Lower Parts - AR15

and another ... AR 15 Buffer @ Buffer Technologies

and another ... AR Recoil Buffer Bumper Replacement | IN GUNS WE TRUST LLC

Even with the abundance of replacement parts, I think that if you continue to break this part, then there is most likely another problem that needs to be solved.

 

[moosehead]

Is it possible you have a weak, or out of spec, buffer spring? I'm definitely not an AR guru, just thinking out loud.

 

[red_zr24x4]

Is it possible you have a weak, or out of spec, buffer spring? I'm definitely not an AR guru, just thinking out loud.

Could be, I've had this rifle for about 5 years now. It was a used upper when I put it together, with a used A2 stock, buffer, and spring.

 

[PGRChaplain]

Replace the Spring!