DIY AR15 Cleaning Rod Bore Guide

Just wanted to share a video of a cheap AR15 Rod Bore Guide I made for under $2. I didn't come up with the idea so I don't deserve any credit for the device. I do get credit for making this lousy video of this contraption and putting it on Younoob. Hope you come away with some information you can use. Let me know if you have ways of improving my setup or if you have an equal or better way to make an inexpensive cleaning rod bore guide with readily available material.