A little late on this. Trijicon sent over some replacement O-Rings for the SRO. As for why is pretty simple. The existing o-rings had either kinked one time too often changing the batteries, or it swelled.
![Trijicon SRO replacement o-ring.](https://john1911.com/wp-content/uploads/2022/08/Trijicon-SRO-Replacement-O-Ring-5-1024x768.jpeg)
In either case, it was causing battery contact issues.
The new rings from Trijicon for one, seem larger. And two, are in an orange-red like color. Pretty handy way to see if the o-rings on a particular dot have been replaced with the upgrade.
The new rings seem thicker at first glance. And that is confirmed when screwing them down. It takes a lot more force to close the battery cap.
That is a good thing. Don’t want water getting down there. I’ve probably got just over 600 rounds since the change. And no problems.
![Trijicon SRO replacement o-ring.](https://john1911.com/wp-content/uploads/2022/08/Trijicon-SRO-Replacement-O-Ring-6-1024x768.jpeg)
The increased force indicates, and Trijicon’s recommendation is, for users to lube the rings before install. I suspect that keeps them pliable long term. And in the near term, reduces friction for that last quarter twist. Which could lead to kinking.
![Trijicon SRO replacement o-ring.](https://john1911.com/wp-content/uploads/2022/08/Trijicon-SRO-Replacement-O-Ring-3-1024x768.jpeg)
Still very happy with the SRO and use it on my ccw pistol.
Sincerely,
Marky
www.John1911.com
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