I’ve lost count on how many I’ve sent in for this issue. It’s over 10. That said, I’ve been using them since they were released and have many thousands of rounds through them.
I’d say that they tend to fail in the 10-25k range. Some last longer than others, but chance of failure is 100% over time.
one thing I’ve done to prolong the life of the buttons is, I no longer turn the optic off. With the Motion activated on/off, I haven’t noticed any difference in battery life. If you’re one of those guys that turns to dot on/off every stage, you’re greatly reducing the time between repairs.
all that said, they need to fix this. The optic has been out several years now, it’s scary to think about how many they warranty for this issue.