Ok, how about this, my primary weapon is the M240B machine gun. My secondary is an M16A2. I can't fix a bayonet to the MG, I'm not effectively clubbing someone with it in the middle of an oh s### situation, and it is definitely a long range weapon (10m is way too close). So, I get trapped in a building, My rifle jams, and someone is coming toward my location, presumably hostile and armed. My best bet is to ascertain what I safely can, leave a minimal safety margin for fratricide avoidance, and use the bayonet as a knife or a kbar.