Sorry for the dumb questions, but this is the first time I am building an upper from scratch, and too many options only start to confuse me. What's the difference between melonite and stainless steel gas tubes? Is one preferable to the other?
I have built with both. Just use the standard tube. The melonite tubes are just another way to separate you from your money. The AR market is filled with useless junk that is marketed as "improvement", many are just solutions looking for a problem.