No real point in carrying a bayonet for the weapon anymore, with the way they trained us to use them it was more like a spear. I could see MAYBE using one to augment muzzle strikes in a CQ situation, but that would limit your options with non-combatents. It would definitely increase lethality with a quick melee strike, but not in the way they trained before. Honestly though, if you're going to strike someone with the muzzle of your weapon, and they still need to be ended, why not just buzz 'em?