Ok how to set up an ar for competition?

[yocan]

What kind of competition?

Prone, across the course?

well I'm going to be learning on a 600 yd range. whatever most competitions are. I'm doing this more as a learning how to shoot thing. Lots of guys just said come out and shoot with them they will help me out. A lot of F class shooters, but for the moment I just plan on shooting with glass seeing as I'm in the military and we shoot with glass.

They told me all I needed was a longer barrel to start shooting with them but if there is stuff I need different I"ll go ahead and get it now.

part of me thinks it would be cheaper to go with the 556 for this just get a 24" heavy barrel for it and load 70+ grain bullets but I know the 6.5 would run it much better.