With a 26" rigid probe and the TESLONG innovative close-focusing camera, this Teslong Rigid Borescope is perfect for inspecting the inside of most rifles barrels. This is a great tool to evaluate your cleaning regimen or diagnose firearm problems that saves time and money! The 0.2-inch diameter probe allows easy entry into rifle barrels as small as 0.20 caliber, to inspect cleanliness, throat erosion, tool marks, rifling wear, chamber damage, and fouling. The six LED Ring Lights are adjustable for brightness to give the camera a perfect view of the darkest inspection areas. With the adjustable and detachable 90deg side-view mirror, you can check the rifle barrel wall, or remove it to check the firing pin.This borescope can be used immediately after starting, there is no need to use your smartphone to connect to WIFI or download any apps. Save photos and videos to reference later with the built-in 32 GB Micro SD card. Built-in microphone and speaker to record video with voice and play ...