Just bought one of these ....Rifle Bore Scope Really good quality pictures for less than £50 +P n P which cost $10 from China ,but also available from Amazon UK It will take snap shots and video ,looks better on a phone but just tried it on the PC not quite the same definition but easy to see the rifling leade and crown ok uses side angle mirror length of cable is. 40 inch's so you can go in from breech or muzzle without having to do half n half ! Only down side is as yet they don't work on I Phones , and is 0.2 inch / 5.0mm dia great for .22 and upwards . Has front facing LEDs with a dimmer switch in the cable . Not a Hawkeye but at 50 squid well worth it . Use on Android, Mac or PC. Good after sales as well. Regards, Gordon.