I've had this light for a while, however it hasn't seen a lot of use. It might come out every few months when I take the Sig to the range, but even then, I don't usually put more than 200 rounds through per visit, and the light is not even usually mounted.
This happened however. I'm not sure if this is a common occurrence, however I've seen Airsoft lights hold up better than this. I've contacted Streamlight and have been assigned case number C7455. Let's see what happens.
Got an e-mail from Lesley in Streamlight's Service Department and they said they will have a replacement tail cap in the mail today, wow, that is amazing service!
Will update this post when it arrives.