Great customer service is uncommon these days so I thought I would share this small experience of mine (and note that I have zero connection to this company).
One of my weapon lights got a short in it then stopped working. It was an XC-1 so I called SureFire and explained my problem. They took my name, gave me an address to send it to and said they would repair it for free and ship it back. All I had to do was pay shipping.
I shipped it, they fixed it and sent it back in about a week with a note telling me if it broke again to just contact them and they would fix it again. I bought that light in 2013 and have used it a lot since then and this is the first time it was repaired. Makes me think about buying more of their products (although I have a few other items from them).