I see that the M951 is listed on the Surefire website, but other sites say it is discontinued. I have also seen it on some sites for under $100. On a popular auction site you can buy them now for about $150. I don't know if they are fake or real for the discounted prices. Are some of them possibly military surplus? For 100-150 I may be interested but $350-$450 is way out of my price range. Any thoughts?