Flashlights need to be fixed so they can be used while brandishing a gun. As is, we have to sling our rifles or put our pistols in our backpacks then equip the flashlight as if it were a weapon itself. Survival is reduced significantly or thrown out altogether when having to stop, open the backpack, unequipped the flashlight then equip the gun. And of course you are then in the dark...
I can see how it might be difficult to use a flashlight and rifle simultaneously but there's no reason a pistol can't be held on one and the flashlight in the other, like flares and chemsticks.