Any weapon will jammed if you don't clean and keep it clean. I would think that in time of crises, you want the weapon that got the most available ammo.....like an AR? M1 Carbine is bit light in stopping power....which is another word for saying that you got be a good shot to be effective. Garand is heavy but effective weapon. Like Patrick Messmer, nothing against the classics. Of course, many impartial people would prefer the AK47 type in survival situation....hordes of owlbears chasing after you....