The fenix will work with the Vtac fine, I run mine at the 1 oclock and wrap over with my thumb to activate.

I am split between the fenix lights and streamlights but I use a pair of TK11 for almost everything in patrol and have been impressed with their durability.

Hunt hard, kill clean, waste nothing and offer no apologies.

"In rifle work, group size is of some interest...but it is well to remember that a rifleman does not shoot groups, he shoots shots." Jeff Cooper