M14 for over 40 years. Wake up and smell the coffee. All troops CARRY rifles, ammo, a LOT more than they shoot them, they fire THOUSANDS of rds for every hit that they get, and hit 10 for everyone that's a SOLID, LETHAL hit,too. Most hits are random accidents, just as likely to be the ear or the finger or the foot or a "crease" as a solid hit to the torso or the head-neck. So weight and bulk of gun,mags,ammo, sights, are HUGE issues, even for those whom Uncle Sugar HAULS to battle in choppers and APCS, and who get HELP from planes,choppers, etc. You will be AFOOT, so wt, bulk, SILENCE mean a LOT more to you than they do to a soldier.US Soldiers don't have to forage,YOU WILL. So both the can and .22 unit have PRIMARY roles to the shtf survivalist. To think otherwise is to be an ignorant fool.