I once owned a bushmaster AR-15. It was heavy, close to 8 lbs, not terrably accurate, and had the bad habbit of jamming live rounds on the roof of the reciever above the bolt. This happend twice in just over 250 rounds, and both times it required tools to clear. What is more, the gun had an annoying twanging sound when fired that could be heard clearly through my hearing protection. While I do not doubt my problem was just that, my problem and not a universal standard, I must admit, my experience did make me turn my back to the design for the last five years. I am now far enough away from my experience to think objectively about the design and I am even considering trying another one. The ability of the design to use seperate upper recievers changing the platform from a lightweight carbine to a scoped precision rifle is what interests me the most, and it does seem to be THE standard in fighting carbines, but I always wondered why. My question is to the AR-15 owners and lovers, Why is the AR THE gun to get. What make is superior to all the competing designs?