I'm going to admit that my knowledge of rifles is at a beginners level. I thought I'd reach out and tap your guys' collective knowledge on semi-automatic rifles and see which one or ones you may suggest. Budget: $500-800. Ammo: Stopping power, but popular enough that I can stock up and practice somewhat cost efficiently. Aim: Something a beginner could shoot relatively easily and still place a decent pattern at a good distance. My friend is a huge proponent for the AK-47, but for some reason, it seems like a meat cleaver, rather than a precision targeting weapon. The AR-15 seems like a good middle ground for cost, reliability, and effectiveness. However, there are so many models out there, that I'm not sure what the criteria are to make a decision. Any suggestions and knowledge granted will be much appreciated. Thank you!