These targets are similar to the popular M50 Low-Noise targets, but use the IR-reflective ink that allows them to glow when using Night Vision and other Infrared imaging devices. That means you can shoot Firebird Targets at night or under low-light conditions using night-vision or directed-light devices. At 65mm, the targets are larger than the normal M50 Targets. These are perfect for quick engagement training or long-range shooting with Instant Hit Recognition, without the loud report.