I have an old D2 Surefire flashlight which I have had for several years. I keep it on the night stand next to the bed. A couple of weeks ago my 2 year old grandson got hold of it and chewed off the rubber piece (on the end cap) that covers the switch. The batteries were dead so I opened the flashlight to change them. I don't know what made me do it, but I pulled on the little spring inside the end cap and it pulled out. I put it back in and put new batteries in but the light would not work. I put it in a drawer so I would have spare parts for another one I keep in the car. I got this wild hair and decided to send an email to Surefire last week. I was just curious to see if I could send it to them for repair. I told them in the email exactly what happened to the flashlight. I put my name and address in the email just out of habit. I got a brand new end cap in the mail today. No cost, no shipping fees, no nothing and this is from an email that I sent! I have to say that they have some great customer service.