I have purchased an Endoscopic bore scope on EBAY. Price was like $15.
If you have ever wondered about the condition of your rifling, how well you clean, any rust hiding in there this will let you know. Plugs into my Android or PC.
Money well spent.
2 clicks low
Was that a new product anybody can buy at that price, or used that someone let go of, and you were the fortunate purchaser?
New in the box.
Go to EBAY and put in Endoscopic bore scope there will be hundreds.
I bought one along the way for about the same price and it was money well spent for sure. Having said that the Lyman borescope blows it away though it costs quite a bit more it's not insanely expensive.