Teslong pioneered selling digital borescopes in a compact, easy-to-use, and economical package. For the last five years, Teslong has taken advances in micro-electronics and digital photography and provided gun enthusiasts with an eye-opening peek inside their firearm barrels. Borescopes used to be an expensive tool reserved only for gunsmiths or specialized enthusiasts, but now Teslong borescopes are easy to use and affordable for everyone. (less)