AMR's thermal stickers make setting up and shooting a thermal sight easy and convenient. Thermal sight accessories Preparing the sticker to calibrate the weapon is extremely easy. All you need to do is peel off the protective film from the target and stick it to the bullet sight. Within minutes, the AMR thermal shield reaches the optimal calibration temperature of 38°C. The sticker is coated with a layer of activated carbon, which reacts when it comes into contact with air. This allows the thermal pad to spontaneously heat up to 38°C - not coincidentally, close to the temperature of warm-blooded animals. The shooter only needs to aim at the pad, set the target reticle on the target and fire 2-3 test shots. The small diameter of the pad (4 cm), makes it easy to determine the average hit point. AMR heat shields can also be used as improvised hand warmers in a situation when the temperature unexpectedly drops. Features: easy zeroing of the thermal sight 10 targets included diameter of the disc about 4 cm fast heating with active carbon targets reach temperatures of up to 38°C