Due to my financial situation, I can only afford to have one rifle. I currently have an AR-15 in 5.45x39 caliber 5.45 AR Pros: Modern design, cheap ammo Cons: Corrosive ammo, only available online, few ammo choices. FAL Pros: Reliable, big round, commercially available ammo, will force me to reload, can use to hunt. Cons: Expensive ammo, large/heavy rifle, oldish. XCR 5.56 Pros: Modern design, good features, caliber swappability, will force me to reload, commerically available ammo/ammo selection Cons: Expensive, 1/9 barrel, uncommon. Something else? I think I'm just getting bored.