Randolph Engineering CMT Color Lens for the Ranger XL size 62mm. Color Magnification Technology û Critical to your overall shooting experience, CMT is applied to the surface of the same poly carbonate lenses you trust. The 2.5mm thick lens is crafted with crystal clear, optical grade polycarbonate to insure high impact resistance. The lens surface and the CMT layers are protected by an ultra-hard coating that makes them 300% more durable than standard plastic lenses. The CMT performs instantaneously; amplifying orange colors at the speed of light, ready to perform from your first glance.