1 general purpose rifle to me means able to fill most rifle roles. 0 to 100 yards, 1-300, and 3-800.
Now, my AK 74 can do almost anything out to 300, but then it fades. (3x scout scope)
My Savage Bolt gun .308 can do great in longer ranges, but no CQ stuff. (10x fixed scope)
FAL in .308 can do just about anything, but really excels at 100-600 yds. (4-12x variable) Not the best CQB, but it can do it. Not as accurate as the Bolt .308, but I can squeeze 4 inches at 300 yards, on a gusty day. It IS heavy, but can be managed.
I don't own an AR, but honestly, I don't feel the need for one in my lineup.
Hey i know you! you were using your fal at the 300 yard at ussa, me and my buddy were playing with mosin nagants.