This borescope is just the right ticket to check the copper/lead fouling of any gun barrel. The .2" camera fits my .22LR, .223/5.56 barrels. I have a larger borescope that I could not use on these guns. The side mirror gives you a up close look at the amount of fouling you may or may not have. I also use this to just verify my work that the barrel is clean before putting it way ready for my next range day. I use this on a laptop which gives me a large screen to view.
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