Required tools to install a barrel and align FSB?
I was recently thinking about changing the barrel on one of my rifles, and a friend of mine who is an armorer and deputy for the U.S. Marshal Service advised me not to do it. He's been to several armorers schools, including HK, Glock, and Colt's(Ken Elmore). He told me that Ken Elmore had advised during his class, that to properly install a barrel and align the front sight base, it required a thousand dollar tool. He advised all of his students not to mess with the barrel.
I figure Ken Elmore has forgotten more about AR's than I'll ever know so.... Is it really that difficult to properly align the front sight post?