Wowza, Rage can fail and they do fail, I've had one fail on me.
One blade did not deploy, even after the pass through on the ground impact.
I've harvested 2 other deer with the Rage, each of those cases the o-ring was gone upon arrow recovery.
The occasion of the lost deer the o-ring didn't even roll down the ferule and only the deployed side was broken.
Failures happen, Mechanical or not.
But I've never lost a deer with a Muzzy when shot placement was spot on.
Pics..