There are very few lights out there that I trust to work everytime no matter what, and even fewer that withstand weapon recoil or getting bashed against equipment and structures, but again I reccomend the ASP Triad series or a custom P60 module built by Nailbender or PFlexPro. Cant beat the price point on those compared to a Malkoff or Elzetta especially when Im buying them myself for duty lights. As much as I would love to own those, its a risk losing stuff.