So forgive me if this is a real ******* question but it got me wondering. I have read that instead of buying a .22LR conversion kit to shoot it out of a 5.56 AR the better option is to just have a completely different upper in .22LR and swap. Now, if you buy a 15/22LR could you just reverse that? Buy a separate upper for 5.56/.223 NATO? Just wondering as AR's have flown off the shelves. I've been contemplating an AR purchase for damn near a year now and look what procrastination has gotten me! No supply. I fear that I won't be able to get one in the future because of what's going on.