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.
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.
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.
Still very happy with the SRO and use it on my ccw pistol.
Sincerely,
Marky
www.John1911.com
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