Pad and a good down sleeping bag is all you need for "sleep system. I backpack around griz all summer and never carry a gun, just bear spray. If you know how to handle those situations your fine especially with just black bears. So just figure out how to handle yourself around them and get some spray and leave the guns at home. There has been like 2 people out of millions recreating in the mountains attacked by cats so relax. Someone that has not idea surrounding the situational aspects of a bear in counter has no need for a gun as shown by the guide killed in WY this year who was carrying a gun and killed. Obviously not to say he didn't know that or how to use the gun just a general warning and information for people. Your talking about CO which has had 1 cat attack that I know of... Maybe people can chime in with more but I doubt it.. So beside leaving the gun at home you have to many layers, hunt, sleep and live in all you layers and it saves you a lot of space.
To be accurate, the guide that lost his life in WY was not carrying the pistol at the time of the attack, based on the report from the investigation. The pistol was in a pack that was several yards away from the guide when the bear attacked.