JP SCS buffer O rings.

[tomv]

When I pulled the SCS buffer out of my PCC to install a Battle Arms stock on it, I noticed that the frist two O rings (four weight system) were broken and flattened. Anyone Know what causes this? I want to shoot the gun this weekend so I can't wait for JP customer service for replacement O rings. They look like standard 3/4" rings so I'll try those. Is there anything special about the JP ones?

[LowSpeedHighDrag]

33 minutes ago, tomv said:

When I pulled the SCS buffer out of my PCC to install a Battle Arms stock on it, I noticed that the frist two O rings (four weight system) were broken and flattened. Anyone Know what causes this? I want to shoot the gun this weekend so I can't wait for JP customer service for replacement O rings. They look like standard 3/4" rings so I'll try those. Is there anything special about the JP ones?

 

Can't help you about an immediate replacement, but they're a wear and tear item, and should be replaced periodically.  JP sells a maintenance kit that includes them.

[nso123]

7 hours ago, tomv said:

When I pulled the SCS buffer out of my PCC to install a Battle Arms stock on it, I noticed that the frist two O rings (four weight system) were broken and flattened. Anyone Know what causes this? I want to shoot the gun this weekend so I can't wait for JP customer service for replacement O rings. They look like standard 3/4" rings so I'll try those. Is there anything special about the JP ones?

I know that viton o-rings can be used in a pinch. JP has said they are not normal o-rings though. 

[jerseyglock]

Happened to me two months ago, first 2 rings failed back to back. Per JP support, normal wear and tear. Chances are last 2 rings will be going soon, good thing that I spare JP o-ring kit on hand.

[tomv]

I found some 3/4"ID - 7/8" OD O rings at the hardware store. Seem to be a perfect match for the two good ones that are left. We'll see what happens.