Free: Contests & Raffles.
I got one of these for Christmas this past year. It's definitely worth it.Funny story, yesterday my daughter was complaining of having a bug in her ear. She felt like something was crawling around so I look in there with a flashlight and could not see anything. Then I thought, hey I got a borescope. So I used the borescope and was able to take photos of her inner ear canal. No bugs LOL! Multi use tool. I have only used an otoscope a few times, but are those pustules on there? I always remembered a fairly smooth look. I know it's not gun related but here's a photo of the inner ear. Taken with the borescope.
Don’t get one ! You will see all kinds of pits, scratches, carbon that will make you want to replace an otherwise fine barrel .