Re: AR's and chrome lined barrels.
Unless you're going after absolute accuracy; there is not going to be any noticeable difference in accuracy. IMO, the design/task of an AR, there is nothing about shooting dime sized groups at 100yrds. If you're planning on firing rapid fire and dumping full mags, go with the chrome lined and you'll be just fine.
What are you gonna do, talk the alien to death? -- (on Sigourney Weaver's worry about Guns in Aliens)
"Safety is something that happens between your ears, not something you hold in your hands."
"I carry a small gun to compensate for my huge Blue press."