Burris 300628 BTC 50 Thermal Clip-OnThe Burris BTC 50 Thermal Clip-On is a thermal imaging device designed to attach to a daytime rifle scope, allowing for nighttime or low-light use. Model 300628 features a 50mm objective lens, providing clear thermal imaging with enhanced target detection capabilities. It's engineered for rugged use and is designed to be easily mounted in front of an existing scope, making it versatile for various shooting applications. This Burris 300628 clip-on thermal unit helps users detect heat signatures from animals or targets, offering improved visibility in complete darkness. Burris BTC 50 Thermal Clip-On 300628