It sounds more like the nature of the beast than an actual design deficiency. If you wish to carry a pistol with a weaponlight, the mouth of the holster has to be sufficiently wide to accommodate the bezel, then the leather, Kydex, or whatever is tapered to cover as much of the trigger as possible. Depending on the design of the pistol some holsters will have more of a gap than others. Personally, I find it an acceptable tradeoff to have a light mounted for uniformed patrol or raids, vs. the remote possibility that something will work its way into the gap.