Of course, I do not own an AR-15, but I may consider one in the future -- provided they are legal, naturally!But I like to prepare for future purchases. The rifle I am considering has no carrying-handle and no iron sights. I'd like freeper input on what sort of scope I should consider: Reflex / Holo with or without Fixed Power, a Fixed Power illuminated, or a variable power? Brands, prices, suggestions, all are welcome. The rifle would be for close to medium range target shooting (0-300 yards), especially 'action shooting' competitions. Price must be under or at 500. Would...