This question is for all you outdoorsman/women out there. Years ago, I purchased a Professional Ordnance AR15 variant. I suppose I'm one of the lucky ones, as I've had relatively few problems with it. I'm considering this as my backpacking companion as it weighs less than 4 pounds. My question for you...is the .223 round that accompanies it adequate for an irate bear, should I need it? I'll have a 30-round magazine inserted as well... I would certainly do whatever I could to avoid such an encounter. Thanks in advance.