Dissappointing - SureFire M640DF Scout Light Pro Dual Fuel LED Weapon Light

The light I received flickers and dims when shooting and cycling my rifle with the cr123 batteries installed. And comparing the performance of this top shelf product from surefire to the competition, the only good thing about this light is the footprint. Get the modlite or arisaka you will be much better served with the candela and throw of those 2 companies compared to this m640df, even surefires previous top shelf product outperformes this model. Got 2 stars instead of one because the fit and finish of the product is superb despite performance.