Mag lights are not recoil rated. They might work for a bit but will fail for sure, don't want that to happen when you need it. That little 190 lumin one like on my VZ has 1k rounds through the gun while mounted and still works fine. And has a handy quick relese, well relitivly quick, it's real stiff and will bite your finger if ya don't watch out. Fits in the pocket well too, only a bout 2" long, but a bit fat for the pocket carry all the time, jacket pocket carry OK.If my life depended on it, for sure the big buck Stream light or mil spec type lights, for sure!!! No comprimise in combat.