I am in the market for an AR that I can compete in 3 GUN with. I am an ex 11B vet that has probably shot 100,000 rounds minimum through the platform and consider it my most proficient weapon, but have never owned one. I plan on shooting 1,000-5,000 rounds a month, and reloading. What would be the weapon of choice in the $1000-$2000 range that I can compete with. I am looking for pros and cons of the different manufactures out there or any route someone would take to build one. Thanks for all the input.