I have never had must interest in shooting match with AR-15 but I would like to learn more about it simply for the knowledge and I may enjoy it the more I learn about it. So what makes a match rifle different. I understand longer barrel like 20" and maybe a trigger??? Do people ever shoot with 16"? Irons or scope? And typically how does a "match" work? Set distance, varying distance? I will now sit back and enjoy the ride to school! Thanks guys!