Because they are the second best gun type to use. They are a bike with training wheels with a jet engine. Why would you stop using AR's? They are an all around gun, the range, and stability makes them lasers at any range. Which is funny. Id guess 80% of people use them. Every game of rumble I queue up im the only person with a sniper and a HC and I win 9/10 games. Its almost the best weapon type, but with high learning curves of HC and the new and improved scouts. People are afraid to get good with something new.