I've been reading all over the interweb and still left thinking it's not necessary. Do you break in a barrel? 5 shots clean then cool. Repeat 5 times. Then there's lapping the barrel. Anyone melt lead and lap their barrels? I've seen that most I've read AR shoots better the dirtier it gets. Only clean when there's a malfunction FTF or FTE. What are your thoughts on barrel maintenance and increasing the life and accuracy of the barrel.
Short barrel lapping video:
Short barrel lapping video: