More like 25 feet. That distance can be closed faster than most people can clear their leather. In many CQB situations, a gun can be utterly useless next a knife with only a semi-skilled wielder that generally knows what he (or she) is doing. Knives can do much more damage than a gun or rifle in one go-'round. That is why the Army is really starting to get back to the basics on some of the bayonet and knife instruction, along with armed (knife, bludgeon) and unarmed combatives. They always taught bayonet, but no one ever really cared to take the time to "really" teach how to use it. Now, things have changed. The Marines - well they always taught it, and a lot...