The Pulsar Krypton FXG50 Thermal Imaging Front Attachment Kit converts your daytime riflescope to a full-feature thermal optic without requiring you to re-zero. The magnesium alloy construction boasts an IPX7 waterproof rating, ensuring the device works in a wide variety of weather conditions, and the 320 x 240 microbolometer helps you scope large areas quickly and easily. Pulsar Krypton FXG50 Thermal Imaging Front Attachment Kit Black, 50mm - Scopes at Academy Sports