I want to mount a light to my 590 without spending $265 on a surefire forearm, and without having to grind off the bayonet lug. What is the best way to accomplish this? I have seen the Tacstar side saddle mount and that looks pretty good. I just don't want a crappy quality light that will konk out on me when I need it most. Which of the Surefire lights could hold up to the recoil of a 12ga when mounted like this?