I Just received my Surefire M2 today and was excited to actually see what 120 lumens of nice white light looks like. BAM!! Shot down like a unlucky kid on prom night. The bulb did not work. The 65 Lumens is nice though. But I called Surefire Customer service and spoke to a nice representative. He just asked for my address and said he would ship one right out to me. I was totally shocked that dealing with any customer service dept. could be so pleasant. The fact that it was so easy helped with my let-down of 120 Lumens of light.